John is planning to drive to a city that is 450 miles away. If he drives at a rate of 50 miles per hour during the trip, how long will it take him to drive there?


Answer, ___ Hours. For 100 points

The answer is 7/10 given that a book contains animal characters given that it is a graphic Nove. We have 24 books, of which 10 are graphic novels and 11 have animal characters.

Seven of them are graphic novels with animal characters. What we are looking for is the probability of an animal character being present, given that the book is a graphic novel. We can use the Bayes theorem to calculate this. Bayes' Theorem: [tex]P(A|B) = P(B|A)P(A) / P(B)P[/tex](Animal Characters| Graphic Novel) = P(Graphic Novel| Animal Characters)P(Animal Characters) / P(Graphic Novel)By looking at the question, P(Animal Characters) = 11/24,

P(Graphic Novel| Animal Characters) = 7/11, and P(Graphic Novel) = 10/24.P(Animal Characters| Graphic Novel) [tex]= (7/11) (11/24) / (10/24)P[/tex](Animal Characters| Graphic Novel) = 7/10The probability that a book contains animal characters given that it is a graphic novel is 7/10.

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The value of the integral is 640V. we integrate with respect to r:

∫0^4 10Vr^2 r dr = (10/4)(4^4)V = 640V

To evaluate the integral of Vx^2 + y^2 dV over the given region E, we can use cylindrical coordinates since the region lies inside a cylinder.

First, we need to determine the limits of integration for each variable. For z, the limits are -4 to 6, since the region is between the planes z=-4 and z=6. For the cylindrical coordinates, we know that x^2 + y^2 = r^2, so the cylinder can be represented by r = 4. Therefore, the limits for r are 0 to 4, and the limits for theta are 0 to 2π.

Substituting in the cylindrical coordinates into the integral, we get:

∫∫∫E Vr^2 r dz dθ dr

= ∫0^2π ∫0^4 ∫-4^6 Vr^2 r dz dr dθ

Since the integral does not depend on theta or z, we can evaluate them first. The integral with respect to z gives:

∫-4^6 Vr^2 r dz = 10Vr^2 r

Next, we integrate with respect to r:

∫0^4 10Vr^2 r dr = (10/4)(4^4)V

= 640V

Therefore, the value of the integral is 640V.

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True. The given equation E(XY) - Mx Hy = E[(x - Ux)(Y - Hy)] represents the covariance formula.

Covariance measures the degree to which two random variables, X and Y, change together. In this equation, E(X) is represented as Hx, and E(Y) is represented as My. The covariance can be calculated by subtracting the product of the means of X and Y (Mx Hy) from the expected value of their product (E(XY)), which is equivalent to the expected value of the product of their deviations from their respective means, E[(x - Ux)(Y - Hy)].

The left side of the equation is the formula for calculating the covariance using the expected values of X and Y (Hx and Hy) and the expected value of their product (E(XY)). The right side of the equation is an equivalent formula for the covariance that expands into the product of two binomials (x - Ux) and (Y - Hy) and takes the expected value of their product. Therefore, both sides of the equation represent the same thing and the statement is true.

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The inequalities that we are solving here are:20 + 4x ≤ 17 or 5x − 9 > −4.

Solution:

When we solve the inequalities, the first step is to isolate the variable to one side of the equation.

Let's solve for 20+4x ≤ 17:20 + 4x ≤ 17

We can simplify this inequality by subtracting 20 from both sides:20 - 20 + 4x ≤ 17 - 20

Simplifying:4x ≤ -3Dividing both sides by 4:4x/4 ≤ -3/4x ≤ -3/4

So, the solution to the inequality 20 + 4x ≤ 17 is:x ≤ -3/4

Now, let's solve the second inequality 5x − 9 > −4:5x − 9 > −4

We can simplify this inequality by adding 9 to both sides:5x - 9 + 9 > -4 + 95x > 5

Dividing both sides by 5:5x/5 > 5/5x > 1

So, the solution to the inequality 5x − 9 > −4 is:x > 1

We can combine the solutions to both inequalities as follows:x ≤ -3/4 or x > 1

Thus, the solution to the inequalities 20 + 4x ≤ 17 or 5x − 9 > −4 is x ≤ -3/4 or x > 1.

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the ratio test is inconclusive. We cannot determine whether the series converges or diverges using this test alone.

We can use the ratio test to determine whether the series [infinity] cos(n/3) n! n = 1 converges or diverges. The ratio test states that if

lim (n → ∞) |a_{n+1}/a_n| < 1,

then the series converges absolutely. If the limit is greater than 1, the series diverges. If the limit is equal to 1, the test is inconclusive.

Let's apply the ratio test to the given series. We have:

|a_{n+1}/a_n| = |cos((n+1)/3) (n+1)! / (n cos(n/3) n!)|

Canceling the n! terms, we get:

|a_{n+1}/a_n| = |(n+1) cos((n+1)/3) / cos(n/3)|

Now, taking the limit as n → ∞, we get:

lim (n → ∞) |a_{n+1}/a_n| = lim (n → ∞) |(n+1) cos((n+1)/3) / cos(n/3)|

Since cos((n+1)/3) and cos(n/3) are both bounded between -1 and 1, we can ignore them and focus on the ratio of the n+1 and n terms. We get:

lim (n → ∞) |(n+1) / n| = 1

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Based on the results from the linear program, the optimal solution shows that Aunt Anastasia should produce 20 baskets and 10 eggs, as the rabbits are already fixed at 25 due to her commitment to the charitable organization.

The optimal value of the objective function (profit) is $60, which is the maximum profit that can be earned by producing 20 baskets and 10 eggs subject to the given constraints. It is not recommended for Aunt Anastasia to make all three products as the linear program indicates that the optimal solution only involves producing two of the three products, and the profit obtained from producing all three products would be less than the profit obtained from producing baskets and eggs only. Therefore, the recommended products for Aunt Anastasia to make for the spring are baskets and eggs.

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The lengths of the various foam pieces are represented here in inches according to the supplied specs. The following information is provided on a separate sheet of paper, which can be used to answer the questions that are there: 10 in, 20 in, 2 in, 10 in, 5 in, 20 in, 20 in, 8 in, 5 in, 2 in, and 26 in.

The provided measurements suggest that the foam play toy is made up of a number of different foam pieces, each of which has a different length.

One would need to conduct an analysis of the provided measures and give careful consideration to the particular questions that are being asked in order to answer the questions on the separate paper. Because the questions themselves are not included in the information that is provided, it is required to evaluate the prompts that are on the separate page and respond to them in the appropriate manner.

The lengths of the foam pieces can be determined by using the specified measures, which can also be used to answer any queries regarding the arrangement of the foam pieces, the overall length, or any other special inquiries that are mentioned in the https://brainly.com/question/28170201.

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To sketch several levels of the function \(f(x, y) = e^x y\), we can plot contour lines corresponding to different function values. Each contour line represents points in the xy-plane where the function takes a constant value.

Here is a sketch showing contour lines for various levels of \(f(x, y) = e^x y\):

```

   |          _______________

   |        _/                |

   |      _/                   |

   |     /                      \

   |    |                        |

   |    |                        |

   |    |                        |

   |     \                      /

   |      \                    /

   |          \______/

   |

   +--------------------------------

```

Each contour line corresponds to a different level of \(f(x, y)\). The lines get closer together as we move away from the origin, indicating an exponential growth pattern.

Please note that the sketch is a rough representation and may not accurately reflect the precise shape and spacing of the contour lines.

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The power series expansion of f(x) = 4x^2 - 39x + 98 around 5 is f(x) ≈ 3 + (x-5) + 4(x-5)^2.

To expand f(x)=4x^2-39x+98 as a power series around 5, we need to use the formula for a power series:

f(x) = ∑(n=0 to infinity) [f^(n)(a)/n!] * (x-a)^n

where f^(n)(a) represents the nth derivative of f(x) evaluated at x=a. In this case, a=5.

To find the derivatives of f(x), we can use the power rule and the constant multiple rule:

f'(x) = 8x - 39
f''(x) = 8
f'''(x) = 0
f''''(x) = 0
...

Notice that the derivatives beyond the second derivative are all zero. This is because f(x) is a quadratic function, so all higher-order derivatives are zero.

Now we can plug these derivatives into the formula for the power series:

f(x) = f(5) + f'(5)*(x-5) + (f''(5)/2!)*(x-5)^2 + ...

f(5) = 4(5)^2 - 39(5) + 98 = -23

f'(5) = 8(5) - 39 = 1

f''(5) = 8

So the power series expansion of f(x) around x=5 is:

f(x) = -23 + (x-5) + 4/2!*(x-5)^2 + 0*(x-5)^3 + 0*(x-5)^4 + ...

Simplifying this expression, we get:

f(x) = -23 + (x-5) + 2(x-5)^2 + ...

And that's the power series expansion of f(x) around x=5!
Hi! To expand the function f(x) = 4x^2 - 39x + 98 as a power series around 5, we will use the Taylor series expansion formula:

f(x) = f(a) + f'(a)(x-a) + (f''(a)/2!)(x-a)^2 + ...

where a = 5. First, let's find the derivatives of f(x):

f(x) = 4x^2 - 39x + 98
f'(x) = 8x - 39
f''(x) = 8

Now, we'll evaluate the derivatives at a = 5:

f(5) = 4(5)^2 - 39(5) + 98 = 100 - 195 + 98 = 3
f'(5) = 8(5) - 39 = 40 - 39 = 1
f''(5) = 8

Finally, we'll plug these values into the Taylor series expansion formula:

f(x) ≈ 3 + 1(x-5) + (8/2!)(x-5)^2
f(x) ≈ 3 + (x-5) + 4(x-5)^2

So, the power series expansion of f(x) = 4x^2 - 39x + 98 around 5 is f(x) ≈ 3 + (x-5) + 4(x-5)^2.

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To find the number of integers between 400 and 851 inclusive that are divisible by four, we need to determine the number of multiples of four in that range. The first multiple of four in the range is 400, and the last multiple of four is 848. To find how many multiples of four there are, we can subtract the two numbers and divide by four, then add one (because we need to include the first multiple).


- First multiple of four in the range: 400
- Last multiple of four in the range: 848
- Difference between the two: 848 - 400 = 448
- Divide by four: 448 ÷ 4 = 112
- Add one: 112 + 1 = 113

Therefore, there are 113 integers between 400 and 851 inclusive that are divisible by four.

There are 113 integers between 400 and 851 inclusive that are divisible by four.

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the area of the shaded region is 0.8588 rounded to 4 decimal places.

To solve these problems, we will use the standard normal distribution, which is a normal distribution with mean 0 and standard deviation 1. We can convert any normal distribution to a standard normal distribution by using the formula:

Z = (X - μ) / σ

where X is a random variable from the normal distribution with mean μ and standard deviation σ, and Z is the corresponding value from the standard normal distribution.

To find the probability that X is greater than 15.2, we need to find the corresponding probability from the standard normal distribution. First, we convert 15.2 to a Z-score:

Z = (15.2 - 15.2) / 0.9 = 0

Since the standard normal distribution is symmetric around 0, the probability of Z being greater than 0 is equal to the probability of Z being less than 0. Therefore, the probability that X is greater than 15.2 is:

P(Z > 0) = 0.5

So the probability is 0.5000 rounded to 4 decimal places.

To find the probability that X is between 14.3 and 16.1, we first convert these values to Z-scores:

Z1 = (14.3 - 15.2) / 0.9 = -1

Z2 = (16.1 - 15.2) / 0.9 = 1

Next, we find the probability of Z being between -1 and 1 using a standard normal distribution table or calculator:

P(-1 < Z < 1) = 0.6827

So the probability is 0.6827 rounded to 4 decimal places.

The shaded region on the standard normal distribution graph is bounded by -1.13 on the left, 2.26 on the right, and the horizontal axis on the bottom. To find the area of this region, we can calculate the probability of Z being between -1.13 and 2.26:

P(-1.13 < Z < 2.26) = P(Z < 2.26) - P(Z < -1.13)

Using a standard normal distribution table or calculator, we can find that:

P(Z < 2.26) = 0.9880

P(Z < -1.13) = 0.1292

Therefore,

P(-1.13 < Z < 2.26) = 0.9880 - 0.1292 = 0.8588

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The value of the given integral is (125π/6) - (25/3)√(6).

To evaluate the integral:

∫∫R √(25 - x² - y²) dA

R is the region in the first quadrant enclosed by the circle x² + y² = 25.

To change to polar coordinates, we make the substitutions:

x = r cos(θ)

y = r sin(θ)

r is the radius and θ is the angle from the positive x-axis to the point (x, y).

The region R can be described in polar coordinates by:

0 ≤ r ≤ 5

0 ≤ θ ≤ π/2

The integral becomes:

∫∫R √(25 - x² - y²) dA

= ∫(0 to π/2) ∫(0 to 5) √(25 - r²) r dr dθ

We can evaluate the inner integral first:

∫(0 to 5) √(25 - r²) r dr = [- (1/3) (25 - r²)^{(3/2)}]|(0 to 5) = (125/3) - (25/3)√(6)

Substituting this into the original integral and evaluating the outer integral, we get:

∫(0 to π/2) (125/3 - (25/3)√(6)) dθ = (125π/6) - (25/3)√(6)

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a. distance should not directly affect the performance variable. b. A valid IV can be a challenging task and requires careful consideration of the underlying causal mechanisms and potential confounding factors.

a. In order for distance to be an instrumental variable (IV) for attendance, it must be (i) correlated with attendance, and (ii) uncorrelated with the error term (u) in the attendance equation. Additionally, distance should not directly affect the performance variable.

b. If attendance is correlated with the error term (u) in the attendance equation, then the interaction term between GPA and attendance will also be correlated with u. A possible IV for the interaction term could be a measure of how easily accessible the lecture notes are to the students. If there is a system in place that allows students to access lecture notes online or through a library, then students with lower attendance may still have access to the material covered in the lectures and may perform better if they have good GPA. Thus, this variable may be a good IV for the GPA*attendance term. However, it should be noted that finding a valid IV can be a challenging task and requires careful consideration of the underlying causal mechanisms and potential confounding factors.

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Answer: -0.3

Step-by-step explanation:

If 3/5 of the total bill was for labor costs and the labor cost was $79.50, we can calculate the total bill (b) by solving the equation (3/5)b = $79.50.

Let's solve the equation to find the total bill (b). We are given that 3/5 of the total bill was for labor costs, which is represented as (3/5)b. We are also given that the labor cost was $79.50.

Using the equation (3/5)b = $79.50, we can solve for b by isolating the variable. To do this, we multiply both sides of the equation by the reciprocal of 3/5, which is 5/3:

(3/5)b * (5/3) = $79.50 * (5/3)

The 5s cancel out, and we are left with:

b = $79.50 * (5/3)

Evaluating the right side of the equation:

b ≈ $132.50

Therefore, the total bill for the repairs on Alonso's car is approximately $132.50.

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This problem is known as 2-SAT, and it can be solved efficiently using algorithms such as the strongly connected components algorithm.

The 2-SAT problem is a special case of the more general Boolean satisfiability problem (SAT), where each clause contains an arbitrary number of literals. However, in the 2-SAT problem, each clause contains exactly two literals, which makes it easier to solve.

To solve the 2-SAT problem, we can construct a directed graph where each literal x is represented by two vertices: x and not(x). For each clause (a OR b), we add two directed edges: not(a) -> b and not(b) -> a. This graph is called the implication graph, and it encodes the logical relationships between the literals.

Next, we identify the strongly connected components of the implication graph. If a literal x and its negation not(x) belong to the same strongly connected component, then the 2-SAT problem is unsatisfiable, because there is no way to assign values to x and not(x) that make both true.

If all the literals x belong to different strongly connected components, then we can assign a truth value to each literal x based on its position in the depth-first search ordering of the implication graph. Specifically, if x comes before not(x) in the ordering, we assign x to true, and if not(x) comes before x, we assign x to false. This assignment satisfies all the clauses of the 2-SAT problem, because for each clause (a OR b), at least one of the literals a and b must be true, and the other literal can be false.

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The length of the radius of cone A. is [tex]\frac{\pi}{6}[/tex].

The lateral surface area of cone A is a sector with central angle 6 radians and radius π.

We can use the formula for sector area to find the lateral surface area of the cone.

Area of sector = θ/2π×π²

where θ is the central angle and π is the radius.

Area of cone’s lateral surface area (L) =θ/2π×2πr=rθ.

So, r = L/θ = π/6 (when L=π and θ=6 radians).

The length of the radius of cone A is π/6 which is approximately 0.524.

Therefore, the length of the radius of cone A is [tex]\frac{\pi}{6}[/tex], when unwrapped, given that the lateral surface area of cone A is a sector with central angle 6 radians and radius pi.

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Then, describe the steps involved in calculating taxable income including pension contributions, and provide examples to illustrate how these calculations work.

Finally, you can conclude by emphasizing the importance of proper tax planning and compliance to avoid penalties and other legal issues.

When calculating taxable income, you need to include pension contributions.

Here's how to calculate taxable income including pension contributions:

Step 1: Add up your income for the year, including all sources such as salary, bonuses, rental income, and investment income.

Step 2: Subtract your allowable deductions such as mortgage interest, charitable contributions, and state taxes.

Step 3: Subtract your personal exemptions, which are based on the number of dependents you have.

Step 4: Subtract your pension contributions from your income. These contributions reduce your taxable income, so the higher your contributions, the lower your taxable income.

Step 5: The result of these calculations is your taxable income. You can use this figure to determine how much tax you owe.

Then, describe the steps involved in calculating taxable income including pension contributions, and provide examples to illustrate how these calculations work.

Finally, you can conclude by emphasizing the importance of proper tax planning and compliance to avoid penalties and other legal issues.

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The growth rate in elevation with respect to horizontal distance as you drive up the road is approximately 0.315 feet of elevation gained for every 1 foot of horizontal distance traveled.

Based on the information given, we know that the elevation at the base of the hill is 0 feet and the elevation at the top is 5000 feet (as the sign reads "Elevation 2500 feet" at the base and "Elevation 7500 feet" at the top). The horizontal distance from the base to the top is 3 miles.

To find the growth rate in elevation with respect to horizontal distance as you drive up the road, we can use the formula:

growth rate = change in elevation / horizontal distance

In this case, the change in elevation is 5000 feet (from 0 feet at the base to 5000 feet at the top), and the horizontal distance is 3 miles.

We need to convert the units to be consistent, so let's convert 3 miles to feet:

3 miles = 3 x 5280 feet = 15,840 feet

Now we can plug in the values and solve for the growth rate:

growth rate = 5000 feet / 15,840 feet = 0.315

So the growth rate in elevation with respect to horizontal distance as you drive up the road is approximately 0.315 feet of elevation gained for every 1 foot of horizontal distance traveled.

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The value of x in the equation is -3.

The given equation is 4 = (3x+17)/2

We have to find the value of x

Apply cross multiplication

4×2 = 3x+17

8=3x+17

Subtract 17 from both sides

8-17=3x

-9=3x

Divide both sides by 3

x=-3

Hence, the value of x in the equation is -3.

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Answer:

Therefore, Juan will pay $2.22 in sales tax.

Step-by-step explanation:

To find the amount of tax Juan will pay, we can first calculate 8% of the price of the dollhouse, and then round to the nearest cent.

8% of $27.75 = 0.08 × $27.75 = $2.22

Therefore, Juan will pay $2.22 in sales tax.

Answer: No Solution.

Step-by-step explanation:

To solve the system of equations 2x - y = -1 and 4x - 2y = 6 graphically, we can plot the two lines represented by each equation on the same coordinate plane and find the point of intersection, if it exists.

To graph the line 2x - y = -1, we can rearrange it into slope-intercept form:

y = 2x + 1

This equation represents a line with slope 2 and y-intercept 1. We can plot this line by starting at the y-intercept (0, 1) and moving up 2 units and right 1 unit to find another point on the line. Connecting these two points gives us the graph of the line (Look at the first screenshot).

To graph the line 4x - 2y = 6, we can rearrange it into slope-intercept form:

y = 2x - 3

This equation represents a line with slope 2 and y-intercept -3. We can plot this line by starting at the y-intercept (0, -3) and moving up 2 units and right 1 unit to find another point on the line. Connecting these two points gives us the graph of the line (Look at the second screenshot).

We can see from the graphs that the two lines are parallel and do not intersect. Therefore, there is no point of intersection and no solution to the system of equations.

The Laplace transform of a given function, f(t), is denoted by L{f(t)} and can be determined using Table 7.1 and the properties from Table 7.2.

For the given function, f(t) = 12 + [tex]e^t[/tex] × sin(2t), we will use the linearity property and the trigonometric identity.
First, apply the linearity property: L{12 + [tex]e^t[/tex]  sin(2t)} = L{12} + L{[tex]e^t[/tex] × sin(2t)}.
Next, using Table 7.1, find the Laplace transform of each term:
1. L{12} = 12 × L{1} = 12/s
2. L{[tex]e^t[/tex] × sin(2t)} = [tex]e^{(-s)}[/tex]× L{sin(2t)} = (2 /[tex](s^2 + 4)[/tex]) × [tex]e^{(-s)}[/tex]
Now, combine the transforms: L{12 + [tex]e^t[/tex] × sin(2t)} = 12/s + (2 / ([tex]s^2[/tex] + 4)) × [tex]e^{(-s)}[/tex].

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Thus, this recursive definition means that we can generate an infinite number of positive integers that have a 3 as at least one of its digits by starting with 3 and repeatedly adding a 3 to the end of the previous integer.

A recursive definition is a definition that refers to itself in its own definition. In this case, we want to create a recursive definition for the set of all positive integers that have a 3 as at least one of its digits.

Let's begin by defining the base case, which is the smallest possible integer that has a 3 as one of its digits.

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Answer:

Step-by-step explanation: The speed of reaction to differences between forecasts and actual results. is the answer i think

The correct answer is (c) approximately normal for large samples.

The central limit theorem states that as the sample size increases, the sampling distribution of the sample mean approaches a normal distribution, regardless of the shape of the population distribution. In the case of the difference of two sample means (x1 - x2), the central limit theorem still applies, and the distribution becomes approximately normal as the sample size (n) increases. Therefore, for large sample sizes, the sampling distribution of (x1 - x2) can be approximated by a normal distribution, and the properties of the normal distribution can be used to make statistical inferences about the population mean difference.

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When considering two nonnegative numbers p and q such that p+q=6, the difference between the maximum and minimum of the quantity (p^2q^2)/2 is 81 - 0 = 81.

To find the maximum and minimum of the quantity (p^2q^2)/2, we can use the AM-GM inequality.
AM-GM inequality states that for any nonnegative numbers a and b, (a+b)/2 ≥ √(ab).

So, in our case, we can write:
(p^2q^2)/2 = (p*q)^2/2

Let x = p*q, then we have:
(p^2q^2)/2 = x^2/2
Since p and q are nonnegative, we have x = p*q ≥ 0.

Using the AM-GM inequality, we have:
(x + x)/2 ≥ √(x*x)
2x/2 ≥ x
x ≥ 0
So, the minimum value of (p^2q^2)/2 is 0.
To find the maximum value, we need to use the fact that p+q=6.

We can rewrite p+q as:
(p+q)^2 = p^2 + 2pq + q^2
36 = p^2 + 2pq + q^2
p^2q^2 = (36 - p^2 - q^2)^2

Substituting this into the expression for (p^2q^2)/2, we get:
(p^2q^2)/2 = (36 - p^2 - q^2)^2/2
To find the maximum value of this expression, we need to maximize (36 - p^2 - q^2)^2.

Since p and q are nonnegative and p+q=6, we have:
0 ≤ p, q ≤ 6
So, the maximum value of (36 - p^2 - q^2) occurs when p=q=3.

Thus, the maximum value of (p^2q^2)/2 is:
(36 - 3^2 - 3^2)^2/2 = 81

Therefore, the difference between the maximum and minimum of (p^2q^2)/2 is:
81 - 0 = 81.

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From central limit theorem, in a sample

a) the sampling distribution of x is normal distribution.

b) The value of P(x>91.3) is equals to the 0.093418.

From the central limit theorem, when the samples of a population are considered then these generate a normal distribution of their own. The sample size must be equal to or higher than 30 in order for the central limit theorem to be true. We have a simple random sample obtained from population with the Sample size, n = 36

Population is skewed right with population mean, µ= 87

Standard deviations, σ = 24

We have to determine the sampling distribution of x.

a) As we see sample size, n = 36 > 30, so the sampling distribution is normal distribution.

b) Using the test statistic value for normal distribution, [tex]z= \frac{ x - \mu }{\frac{\sigma}{\sqrt{n}}} [/tex]. Here, x = 91.3, µ= 87, σ = 24, n = 36. Now, the probability value is, P(x>91.3)

= [tex]P( \frac{ x - \mu }{\frac{\sigma}{\sqrt{n}}} < \frac{ 91.3 - 87 }{\frac{24}{\sqrt{36}}}) [/tex]

= [tex]P(z < \frac{ 4.3}{\frac{24}{6}} )[/tex]

= [tex]P(z < \frac{ 4.3}{4} )[/tex]

= [tex]P(z < 1.32)[/tex]

Using the p-value calculator, the value P(z < 1.32) is equals to the 0.093418. So, P( x < 91.3 ) = 0.093418. Hence, required value is 0.093418.

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Complete question:

A simple random sample of size n=36 is obtained from a population that is skewed right with µ=87 and σ=24.

(a) describe the sampling distribution of x.

b) What is P(x>91.3)?

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The period of the following functions. g ( x ) = cos ( x 4 ) is that it doesn't have any.

To find the period of the function g(x) = cos(x^4), we need to find the smallest positive value of p such that g(x + p) = g(x) for all values of x. That is, we need to find the most minor p such that cos((x + p)^4) = cos(x^4) for all values of x.

Using the identity cos(a + b) = cos(a)cos(b) - sin(a)sin(b), we can expand the left-hand side of the equation:

cos((x + p)^4) = cos(x^4 + 4px^3 + 6p^2x^2 + 4p^3x + p^4)

= cos(x^4)cos(4px^3) - sin(x^4)sin(4px^3)cos(6p^2x^2)

=cos(x^4)sin(4px^3)sin(6p^2x^2) - sin(x^4)cos(4px^3)cos(6p^2x^2) + cos(x^4)cos(4px^3)sin(6p^2x^2)

Let's consider the second condition first. Since x is an integer multiple of π^(1/4), we have: 4px^3 = (4pπ^(3/4))x^3

For this to be an integer multiple of π, we must have p = q/π^(3/4), where q is an integer. Substituting this value of p into the second condition, we get 4qx^3 = rπ

where r is an integer. This implies that x is a multiple of π, which contradicts our assumption that x is an integer multiple of π^(1/4). Therefore, there is no value of p for which g(x + p) = g(x) for all values of x.

In other words, the function g(x) = cos(x^4) does not have a period.

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