Help me with this problem!

When x and y are independent variables with x having uniform distribution (0,1) and y having exponential distribution respectively, then e (X+Y) is 3/2, E(XY) is 1/2, E (x-y)2 is 4/3, and e (x2 e24) is -1/3 22etyx u (0,1) > Independent y exp (1) > Independent

The exponential distribution is a continuous probability distribution used in probability theory and statistics that frequently addresses the amount of time until a given event occurs. Events occur continually, independently, and at a steady average pace during this process.

E (x) = 0+1/2 = 1/2

v (x) = [1 – 0]2 / 12 = 1/12

E x2 = v (x) + [Ex]2

      = 1/12 + 1/4 = 1+3/12 = 4/12 = 1/3

E (y) = 1  v(y)=1  

E y2= 1+1= 2

Eety = ∫0etye-ydy  

Eety  =  ∫0e-y (1 – t)dy  

a : E (x+y) = E (x) + E(y)

      E (x+y) = 1/2+1 = 3/2

b: E (xy) = E (x) E(y) = 1/2 x 1 = 1/2

c: E (x+y)2 = E (x2 - 2xy+ y2)

 =  1/3 - 2 x 1/2 + 2

  = 1/3 + 1 = 4/3

d. E x2e24

= 1/3 x -1 = - 1/3

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The statement "T is injective iff T preserves linear independence" means that T maps distinct vectors in V to distinct vectors in W and that if a set of vectors in V is linearly independent, then their images under T are also linearly independent.

Now, let V and W be two vector spaces and let T: V→W be a linear transformation. We say that T is injective if and only if every distinct vector in V gets mapped to a distinct vector in W.

Now, the statement "T preserves linear independence" means that if a set of vectors in V is linearly independent, then their images under T (i.e., the vectors they get mapped to in W) are also linearly independent.

To see why this is true, suppose we have a linearly independent set of vectors v₁, v₂, ..., vₙ in V. If we assume that their images under T are linearly dependent, then there exist coefficients c₁, c₂, ..., cₙ such that

c₁Tv₁ + c₂Tv₂ + ... + cₙTvₙ = 0

But since T is linear, this is equivalent to

T(c₁v₁ + c₂v₂ + ... + cₙvₙ) = 0

which implies that c₁v₁ + c₂v₂ + ... + cₙvₙ = 0. But this contradicts the assumption that v₁, v₂, ..., vₙ are linearly independent. Therefore, their images under T must also be linearly independent.

Conversely, if T is injective, then it preserves linear independence because distinct vectors in V get mapped to distinct vectors in W. Therefore, if a set of vectors in V is linearly independent, then their images under T must also be linearly independent.

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Answer: 2:1

Step-by-step explanation:

a) The total selling price of 20 mobile sets is Rs. 3,00,000. Therefore, the selling price of each mobile set is:

Selling price of each mobile set = Total selling price ÷ Number of mobile sets sold

= 3,00,000 ÷ 20

= Rs. 15,000

Therefore, the selling price of each mobile set is Rs. 15,000.

b) The cost of each mobile set is given as Rs. 12,500. The total cost of 20 mobile sets is:

Total cost = Cost of each mobile set × Number of mobile sets sold

= 12,500 × 20

= Rs. 2,50,000

The profit made by the shopkeeper is the difference between the selling price and the cost price of the mobile sets:

Profit = Selling price - Cost price

= 3,00,000 - 2,50,000

= Rs. 50,000

Therefore, the profit made by the shopkeeper is Rs. 50,000.

The profit percent is given by:

Profit percent = (Profit ÷ Cost price) × 100

= (50,000 ÷ 2,50,000) × 100

= 20%

Therefore, the shopkeeper made a profit of 20%.

c) The ratio of the length to the breadth of each mobile set is:

Length:breadth = 12:6

= 2:1

Therefore, the ratio of the length to the breadth of each mobile set is 2:1.

Answer:

Step-by-step explanation:

a) To find the selling price of each mobile set, we need to divide the total amount sold by the number of mobile sets sold:

Selling price of each mobile set = Total amount sold / Number of mobile sets sold

Selling price of each mobile set = Rs 3,00,000 / 20

Selling price of each mobile set = Rs 15,000

Therefore, the selling price of each mobile set is Rs 15,000.

b) The cost price of each mobile set is Rs 12,500.

Profit or loss percent = [(Selling price - Cost price) / Cost price] x 100

Profit or loss percent = [(15,000 - 12,500) / 12,500] x 100

Profit or loss percent = 20%

Therefore, the shopkeeper has made a profit of 20%.

c) The ratio of the length to the breadth of the mobile set is:

Length : Breadth = 12 cm : 6 cm

Simplifying the ratio by dividing both sides by 6:

Length : Breadth = 2 : 1

Therefore, the ratio of the length to the breadth of the mobile set is 2 : 1.

The ratio between the number of red gummy bears to the number of yellow gummy bears is of:

20/23.

The ratio between the number of red gummy bears and the number of yellow gummy bears is obtained applying the proportions in the context of the problem.

To obtain the ratio between two amounts A and B, you need to divide the first amount by the second amount. The result of this division will give you the ratio of the two amounts.

The amounts for this problem are given as follows:

Hence the ratio between these two amounts is given as follows:

20/23.

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Answer:

9 sides

Step-by-step explanation:

180 - 140 = 40

360 ÷ 40 = 9

Answer:

Neither parallel or perpendicular

Step-by-step explanation:

Parallel lines have the same slope.  Perpendicular slopes are the negative reciprocals of each other.

30y +25x = -180  Subtract 25x from both sides

30y + 25x - 25x = -25x - 180

30y = -25x - 180  Divide all the way through by 30

[tex]\frac{30y}{30}[/tex] = [tex]\frac{-25}{30}[/tex] - [tex]\frac{180}{30}[/tex]

y = [tex]\frac{-5}{6}[/tex] - 6

y = [tex]\frac{-6}{5}[/tex] x + 6

Comparing the 2 equations, we have slope of

[tex]\frac{-5}{6}[/tex] and [tex]\frac{-6}{5}[/tex]

These slopes are not the same so they are not parallel.

These slopes are not negative reciprocals. so they are not perpendicular.

Perpendicular slopes would be [tex]\frac{-5}{6}[/tex] and [tex]\frac{6}{5}[/tex] or [tex]\frac{-6}{5}[/tex] and [tex]\frac{5}{6}[/tex].  One slope would have to be negative and the other slope would have to be positive which they are not.

Helping in the name of Jesus.

The command that will allow you to set the interface link as preferred over another in OSPF is the "ip ospf cost 10" command. The correct answer is D).

The OSPF protocol uses the concept of cost to determine the best path for routing information to a remote network. The cost of a particular path is calculated based on the bandwidth of the interface and is inversely proportional to it. Therefore, the lower the cost, the more preferred the path is.

To set the preferred link, you can decrease the cost of the desired interface using the "ip ospf cost" command. For example, if you want to set the cost of interface GigabitEthernet0/0 to 10, you can use the following command:

ip ospf cost 10 interface GigabitEthernet0/0

This will make OSPF prefer the specified interface over other interfaces with a higher cost, ensuring that traffic is routed through the preferred link.

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____The given question is incomplete, the complete question is given below:

You need to setup a preferred link that OSPF will use to route information to a remote network. Which command will allow you to set the interface link as preferred over another?

A. ip ospf preferred 10

B. ip ospf priority 10

C. ospf bandwidth 10

D. ip ospf cost 10

To calculate the amount of wire needed to fence Mr. Woodstock's land, you will need to use the formula for the perimeter of a rectangular shape. The formula for perimeter is Length + Width x 2.

Plugging in the given dimensions for Length (36 meters) and Width (16 meters) will give us the following calculation:

36 + 16 x 2 = 88 meters

Therefore, Mr. Woodstock will need 88 meters of wire to fence his land.

Answer:

Independent variable: Cocaine Use

Quasi-Independent Variable: Cocaine-dependent and cocaine-inexperienced mice

Dependent variable: Increase in impulsive behavior

[tex]\bold{Solution:}[/tex]

[tex]\Delta[/tex][tex]DE[/tex][tex]F[/tex] congruent to [tex]\Delta[/tex][tex]JKI[/tex]

[tex]\bold{FD=JI} \text{(corresponding angles of congruent triangles)}[/tex]

[tex]z + 22 = 3z[/tex]

[tex]\text{or,} \ z-3 z= -22[/tex]

[tex]\text{or,} \ -2z = -22[/tex]

[tex]\text{or,} \ z = \bold{11}[/tex]

[tex]\bold{EF=KI} \text{(corresponding angles of congruent triangles)}[/tex]

[tex]5y+13=6y[/tex]

[tex]\bold{y=13}[/tex]

The mean and standard deviation for 30 multiple-choice questions for the number of correct answers is Mean(μ) = 6 and Standard deviation(σ) = 2.19.

What is mean?

A collection of values are averaged to form the mean. The total points were divided by the total scores. When population samples are tiny, the mean is sensitive to extreme scores. For example, if two students in a class of 20 earned significantly higher than the rest, the mean will be skewed higher than the other students' scores might suggest. When using means, larger sample sizes are preferable.

Define standard deviation.

In statistics, a measure of variability known as the standard deviation ( standard deviation ) is frequently used. It demonstrates how different things are from the norm. (mean). When the SD is low, the data tend to be close to the mean, while when it is high, the data are dispersed over a wide variety of values.

Given: number of questions(n) = 30, p = [tex]\frac{1}{5}[/tex], q = [tex]\frac{4}{5}[/tex]

Mean μ = n*p

            = 30  *[tex]\frac{1}{5}[/tex]

         μ = 6

Standard deviation σ = [tex]\sqrt{n*p*q}[/tex]

                                   = [tex]\sqrt{30*\frac{1}{5}*\frac{4}{5}}[/tex]

                                   = [tex]\sqrt{4.8}[/tex]

                                σ = 2.19

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Answer:

the two numbers are 15 and 35, and their ratio is 3:7, and their difference is 20.

Step-by-step explanation:

Answer:

b 1 over 5 times 1 over 5 times 1 over 5 equals 1 over 125

Hence the conversion of given numbers according to given demand is

a) N=217 in binary = 11011001

b) N=99 in hexadecimal = 63

c) N= 344 in hexadecimal = 158

d) N= 136 in base 7 = 253.

e) N= 542 in base 5 = 4132.

f) N= 727 in base 8= 1327

g) N= 171 in hexa =1011

h) N=91 in base 3=10101.

i) N= 840 in base 9 =  1133

a) A good method to convert a decimal number to binary is dividing it by 2 and using the remainder of the division as the converted number, starting by the most significant bit (the right one). We can't divide anymore. So we have:

217÷2 = 108 + 1

108÷2 = 54 + 0

54÷2 = 27 + 0

27÷2 = 13 + 1

13÷2 = 6 + 1

6÷2 = 3 + 0

3÷2 = 2 +1

2÷2 = 1

The binary equivalent to 217 is 11011001

b) To convert a number from decimal to hex we can divide the number by 16, taking out the decimal part and multiplying it by 16 using that as our most significant number while using the result of the original division to continue our conversion. So we have:

99÷16 = 6.1875

The decimal part is 0.1875, we multiply it by 16 and obtain 3 as our most significant number. Since we can't divide 6 by 16 we have that as our least significant number then the hexadecimal equivalent is 63.

c) We follow the same steps as in item b:

344÷16 = 21.5

The most significant number is 0.5*16 = 8

21÷16 = 1.3125

The next number is 0.3125*16 = 5

Since we can't divide it anymore we have our result which is 158 in hex.

d) To convert from decimal to base 7 we'll use the same method as to hex, but this time dividing and multiplying by 7.

136÷7 = 19.428571

The most significant number is 0.428571 * 7 = 3

19÷7 = 2.71428571

The next number is 0.71428571*7 = 5

Since we can't divide it anymore we have our result which is 253.

e) To convert from decimal to a base 5 we'll use the same method as before but dividing and multiplying by 5.

542÷5 = 108.4

The most significant number is 0.4*5 = 2

108÷5 = 21.6

The next number is 0.6*5 = 3

21÷5 = 4.2

The next number is 0.2*5 = 1

Since we can't divide it anymore we have our result which is 4132.

f) To convert from decimal to a base 8 we'll use the same method as before but dividing and multiplying by 8.

727÷8 = 90.875

The most significant number is 0.875*8 = 7

90÷8 = 11.25

The next number is 0.25*8 = 2

11÷8 = 1.375

The next number is 0.375*8 = 3

Since we can't divide anymore we have our result which is 1327

g) Following the same steps as before:

171÷16 = 10.6875

The most significant number is 0.6875*16 = 11

Since we can't divide anymore we have our result which is 1011

h) Following the same steps as before:

91÷3 = 30.333333333

The most significant number is 0.333333*3 = 1

30÷3 = 10

The next number is 0

10÷3 = 3.3333333333

The next number is 0.333333*3 = 1

3÷3 = 1

Since we have the final value remainder as 0 the least significant number is 1

Since we can't divide anymore we have our result which is 10101.

i) Following the same steps as before:

840÷9 = 93.333333

The most significant number is 0.33333*9 = 3

93÷9 =  10.3333333

The next number is 0.333333*9 = 3

10÷9 = 1.11111111

The next number is 0.11111111*9 = 1

Since we can't divide anymore we have our result which is 1133

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Answer:

4 combination if order doesn't matter, 8 if order matter (for example is not the same 1x24 or 24x1)

Step-by-step explanation:

1x24
2x12
3x8
4x6

IF order matter also:
6x4
8x3
12x2
24x1

The answers to 4 decimal places are=

(a) 0.0884

(b) 0.0190

(c) 0.9596

(d) 0.2921

A solid object's surface area is a measurement of the total area that the surface of the object takes up.

The definition of arc length for one-dimensional curves and the definition of surface area for polyhedra (i.e., objects with flat polygonal faces), where the surface area is the sum of the areas of its faces, are both much simpler mathematical concepts than the definition of surface area when there are curved surfaces.

A smooth surface's surface area is determined using its representation as a parametric surface, such as a sphere.

This definition of surface area uses partial derivatives and double integration and is based on techniques used in infinitesimal calculus.

Henri Lebesgue and Hermann Minkowski at the turn of the century sought a general definition of surface area.

According to our question-

a= 2.25-1.25

0.0884

b= 3.04-2.04

0.0190

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Answer:

56

90

56

Step-by-step explanation:

easy easy lol.

aaaaa

An explanation without explaining why that was right is called

dogmatic explanation.

An explanation without a reason why it is true is called a dogmatic statement.

We have,

Dogmatic statement:

This is a statement that is presented as true without providing any evidence or logical reasoning to support it.

It is often based on personal beliefs, opinions, or assumptions rather than objective facts or evidence.

Dogmatic statements can be problematic in academic or scientific contexts, where claims must be supported by evidence and logical reasoning.

It is important to be critical and skeptical of dogmatic statements and to seek out evidence and logical reasoning before accepting any claim as true.

Thus,

An explanation without explaining why that was right is called

dogmatic ex[planation.

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According to the given information, Mary's total annual premium is $574 (rounded to the nearest dollar).

In mathematics, multiplication is an arithmetic operation that combines two or more numbers to produce a product. It is represented by the symbol "×" or "*", or by placing the numbers next to each other with no symbol between them.

Mary is 21 years old, so according to the rating factor table, her rating factor is 1.22 for a female.

For liability insurance, Mary has chosen the 50/100/25 coverage, which means $50,000 for bodily injury per person, $100,000 for bodily injury per accident, and $25,000 for property damage per accident. The premium for this coverage is $385.

For collision and comprehensive insurance, Mary has chosen a $500 deductible, so her premiums are $102 for collision and $87 for comprehensive.

To find the total annual premium, we add up the premiums for liability insurance and collision/comprehensive insurance:

Total premium = Liability premium + Collision premium + Comprehensive premium

Total premium = $385 + $102 + $87

Total premium = $574

Therefore, according to the given information, Mary's total annual premium is $574 (rounded to the nearest dollar).

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To highlight the line y = 0 on the graph in black/grey, draw a straight line passing through all points whose y-coordinate is 0.

What is graph?

In mathematics, a graph is a visual representation of a set of data, typically as a set of points or lines on a coordinate plane. Graphs are used to represent various types of data, such as numerical values, functions, relationships, and patterns.

Assuming that the graph is a coordinate plane with the x-axis and y-axis, do the following:

To highlight the point (9, 8) on the graph in red, locate the point (9, 8) on the coordinate plane and mark it with a red color.

To highlight the point (20, f(20)) on the graph in green, you need to know the value of f(20) first. Once you have that value, locate the point (20, f(20)) on the coordinate plane and mark it with a green color.

To highlight the line y = 5 on the graph in blue, draw a straight line passing through all points whose y-coordinate is 5. This line should be parallel to the x-axis and should be marked with a blue color.

Therefore To highlight the line y = 0 on the graph in black/grey, draw a straight line passing through all points whose y-coordinate is 0. This line should be parallel to the x-axis and should be marked with a black/grey color.

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Answer:

a. For the function:

f(x) = { sin x/3, if x ≤ π

{ x√3/2π, if x > π

I. To find lim f(x) as x approaches π from the negative side, we need to evaluate f(x) for values of x that are slightly less than π. In this case, since sin(x/3) is a continuous function, we can simply evaluate it at x = π:

lim f(x) as x approaches π- = f(π-) = sin(π/3) = √3/2

II. To find lim f(x) as x approaches π from the positive side, we need to evaluate f(x) for values of x that are slightly greater than π. In this case, we can simply evaluate the other part of the piecewise function at x = π:

lim f(x) as x approaches π+ = f(π+) = π√3/2π = √3/2

III. To find lim f(x) as x approaches π, we need to check whether the left-hand and right-hand limits are equal. In this case, since both the left- and right-hand limits exist and are equal, we have:

lim f(x) as x approaches π = √3/2

b. For the function:

f(x) = (x^2 - 36)/√(x^2 - 12x + 36)

I. To find lim f(x) as x approaches 6 from the negative side, we need to evaluate f(x) for values of x that are slightly less than 6. In this case, we can substitute x = 6 - h, where h is a positive number approaching zero, to get:

lim f(x) as x approaches 6- = lim f(6 - h) as h approaches 0

Substituting x = 6 - h into the function, we get:

f(6 - h) = [(6 - h)^2 - 36]/√[(6 - h)^2 - 12(6 - h) + 36]

= [h^2 - 12h]/√[h^2]

Simplifying the numerator and denominator separately, we get:

f(6 - h) = h(h - 12)/|h|

Since h approaches 0 from the positive side, we have:

lim f(6 - h) as h approaches 0+ = lim h(h - 12)/h as h approaches 0+ = lim (h - 12) as h approaches 0+ = -12

II. To find lim f(x) as x approaches 6 from the positive side, we need to evaluate f(x) for values of x that are slightly greater than 6. In this case, we can substitute x = 6 + h, where h is a positive number approaching zero, to get:

lim f(x) as x approaches 6+ = lim f(6 + h) as h approaches 0

Substituting x = 6 + h into the function, we get:

f(6 + h) = [(6 + h)^2 - 36]/√[(6 + h)^2 - 12(6 + h) + 36]

= [h^2 + 12h]/√[h^2]

Simplifying the numerator and denominator separately, we get:

f(6 + h) = h(h + 12)/|h|

Since h approaches 0 from the positive side, we have:

lim f(6 + h) as h approaches 0+ = lim h(h +

Step-by-step explanation:

In response to the stated question, we may state that The margin of error function is equal to the highest mistake on the estimate.

In mathematics, a function is a connection between two sets of numbers in which each member of the first set (known as the domain) corresponds to a single element in the second set (called the range). In other words, a function takes inputs from one set and produces outputs from another. Inputs are commonly represented by the variable x, whereas outputs are represented by the variable y. A function can be described using an equation or a graph. The equation y = 2x + 1 represents a linear function in which each value of x yields a distinct value of y.v

(a) The population distribution must be assumed to be normal before generating a confidence interval.

(b) The margin of error with 90% confidence is provided by:

Error Margin = Z (/2) * (/n)

Where Z (/2) is the confidence level/2 crucial value, is the population standard deviation (unknown), and n is the sample size.

Error Margin = t (/2, n-1) * (s/n)

Where t (/2, n-1) is the critical value for the degrees of freedom /2 and n-1, and s is the sample standard deviation.

(d) The margin of error is equal to the highest mistake on the estimate.

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Answer:

[tex] 2^\frac{3}{10} [/tex]

Step-by-step explanation:

[tex] \dfrac{2^\frac{2}{5}}{2^\frac{1}{10}} = [/tex]

[tex]= 2^{\frac{2}{5} - \frac{1}{10}}[/tex]

[tex]= 2^{\frac{4}{10} - \frac{1}{10}}[/tex]

[tex] = 2^\frac{3}{10} [/tex]

Answer: 0.27272727 or 0.27 (with a dash on top of 27)

Step-by-step explanation:

As a sound wave travels, the particles in the medium it travels through vibrate back and forth in the same direction as the wave travels.

As a sound wave travels through a medium, such as air or water, the particles in the medium vibrate back and forth in the same direction as the wave travels.

However, the particles themselves do not actually move along with the wave. Instead, the wave causes a disturbance in the particles, which then passes from one particle to the next, resulting in a wave-like pattern of motion that travels through the medium.

In other words, the sound wave is a disturbance that travels through the medium, causing the particles in the medium to oscillate back and forth around their equilibrium positions.

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A Clayton family can therefore employ 10,000 different codes to access their house.

In actuality, the habit of numbering to ten on the fingers is what gave rise to the custom of calling numbers by their digits. The English term "number" is derived from the Latin word digits, which originally meant "finger or toe." If the code is made up of four digits, and each digit can be any number from 0 to 9, then there are 10 possible choices for each of the four digits.

Hence, there are a total of the following codes:

10 x 10 x 10 x 10 = 10,000

Hence, the Clayton family has 10,000 different possible entry codes.

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The parabola is passing through (0, 0) and (9, 0).

The locus of a moving point is the location that maintains a constant distance between a stationary point and a predetermined line.

The directrix is a non-moving line, while the focus is a non-moving point.

As you can see, the quadratic variable is not, which modifies the figure's orientation.

This parabola doesn't actually represent a function because it will open horizontally, specifically toward negative infinity, as the graphic linked illustrates.

The vertical line test will reveal that the vertical line in question intercepts the figure in two places, proving that it is not a function.

According to our question-

The equation of the parabola is given below.

y = (3/2)x² - 6x

Then the factor of the equation will be

y = 3x (x / 2 - 3)

Then the zeroes of the function will be

y = 0

x = 0, 9

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Answer:

To find an explicit formula for g(n), we can start by using the recursive formula to generate some terms of the sequence:

g(1) = -29

g(2) = g(1) * (-4) = -29 * (-4) = 116

g(3) = g(2) * (-4) = 116 * (-4) = -464

g(4) = g(3) * (-4) = -464 * (-4) = 1856

We can see that each term in the sequence is obtained by multiplying the previous term by -4. More generally, we can write:

g(n) = (-4)^(n-1) * g(1)

Substituting g(1) = -29 and simplifying, we get:

g(n) = (-4)^(n-1) * (-29)

Thus, the explicit formula for g(n) is:

g(n) = -29 * (-4)^(n-1)

Note that this formula gives the same values as the recursive formula for all positive integers n.

(please mark my answer as brainliest)

The product of expected value of xy is  p^2.

If x and y are i.i.d. Bernoulli(p) random variables, then the probability mass function of each variable is:

P(x=1) = p

P(x=0) = 1-p

P(y=1) = p

P(y=0) = 1-p

To find the expected value of the product xy, we can use the definition of expected value:

E[xy] = Σ Σ xy P(x,y)

where the summation is over all possible values of x and y.

Since x and y can only take on the values of 0 or 1, there are only four possible outcomes:

x=0, y=0

x=0, y=1

x=1, y=0

x=1, y=1

We can calculate the probability of each outcome using the probability mass function:

P(x=0, y=0) = P(x=0)P(y=0) = (1-p)(1-p)

P(x=0, y=1) = P(x=0)P(y=1) = (1-p)p

P(x=1, y=0) = P(x=1)P(y=0) = p(1-p)

P(x=1, y=1) = P(x=1)P(y=1) = p^2

Therefore, we have:

E[xy] = (0)(0)(1-p)(1-p) + (0)(1)(1-p)p + (1)(0)p(1-p) + (1)(1)p^2

E[xy] = 0 + 0 + 0 + p^2

E[xy] = p^2

So the expected value of xy is p^2.

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____The given question is incomplete, the complete question is given below:

g suppose that x and y are i.i.d. bernoulli(p) random variables (i.e., with the same value of p, 0. find the product of expected value of xy.