identify hypotheses.Write the null and alternative hypotheses in words and then symbols foreach of the following situations.(a) A tutoring company would like to understand if most students tend to improve their grades(or not) after they use their services. They sample 200 of the students who used their servicein the past year and ask them if their grades have improved or declined from the previousyear.(b) Employers at a firm are worried about the effect of March Madness, a basketball championship held each spring in the US, on employee productivity. They estimate that on a regular businessday employees spend on average 15 minutes of company time checking personal email, makingpersonal phone calls, etc. They also collect data on how much company time employees spendon such non-business activities during March Madness. They want to determine if these dataprovide convincing evidence that employee productivity changed during March Madness.(c) Since 2008, chain restaurants in California have been required to display calorie counts ofeach menu item. Prior to menus displaying calorie counts, the average calorie intake of dinersat a restaurant was 1100 calories. After calorie counts started to be displayed on menus,a nutritionist collected data on the number of calories consumed at this restaurant from arandom sample of diners. Do these data provide convincing evidence of a difference in theaverage calorie intake of a diners at this restaurant

Answers

Answer 1

Answer:

H0 : μ = 0 ; H1 : μ > 0 ;

H0 : μ = 15 ; H1 : μ ≠ 15

H0 : μ = 1100 ; H1 : μ ≠ 1100

Step-by-step explanation:

Null hypothesis H0 : mean grade of student after they use service of tutoring company is the same.

H0 : μ = 0

Alternative hypothesis H1 : mean grade of student after using service of the tutoring company increases

H1 : μ > 0

2.)

Null hypothesis H0 : Average or mean company time spent checking personal is 15 minutes

H0 : μ = 15

Alternative hypothesis H1 : Average or mean company time spent checking personal mail is not equal to 15 minutes

H1 : μ ≠ 15

C.)

Null hypothesis H0 : Average calorie intake of diner at restaurant.

H0 : μ = 1100

Alternative hypothesis H1 : There is a difference in average calorie intake of diner at restaurant.

H1 : μ ≠ 1100


Related Questions

Which quadrilateral can have 2 pairs of parallel sides, all sides
with equal length, and no right angles?
A square

A triangle

A Rhombus

Trapezoic

Answers

Parallelogram is the word that most generally describes such a figure. A square or rectangle, which do, of course have right angles, are special cases of the parallelogram.

I am assuming (perhaps unjustifiably) that when you say “two pairs of parallel sides” you are talking of a figure with no other sides than those four.
There are, of course, many other polygons (hexagons, octagons, decagons, etc) which have two pairs of parallel sides and other sides, any two of which may or may not be parallel.

The attached figure is a parallelogram with one corner chopped off, making it a pentagon. It still has two pairs of parallel sides & no right angles.

Malik joins a gym. He gets $2 per month of the regular monthly rate for 3 months. Malik pays $49.50 for 3 months. What is the gym's regular monthly rate, Show your work​

Answers

Answer:

$18.50

Step-by-step explanation:

$49.50/3months=$16.50

$16.50+$2=$18.50

Malik joins a gym, then the gym's regular monthly rate will be equal to $18.50.

What is an arithmetic operation?

The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers.

Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.

As per the given information in the question,

Price paid by Malik in three months = $49.50

Then, monthly price will be,

$49.50/3months = $16.50

Then, the gym's regular monthly rate will be,

$16.50 + $2 = $18.50

To know more about arithmetic operations:

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Between what two days was the Increase in texting the largest?


Wednesday to Thursday
Friday to Saturday
Sunday to Monday
Thursday to Friday
Help please

Answers

thursday to friday
hope that helps xxo

Answer:

Thursday to Friday

Step-by-step explanation:

as its the greatest in size and the biggest

Hope it helps XD

The area of the parallelogram is___ cm2

Answers

Answer:

Step-by-step explanation:

Area of parallelogram=base×perpendicular height

Area of para.= 7×14

Area of para.= 98cm²

When 2 dice are rolled, find the probability of getting a sum greater than 8.

Answers

Answer: 10/36

When a pair of fair dice are rolled , the total possible cases are (6 × 6) = 36. Out of these 36 cases the following 10 cases are favors(giving the sum > 8) for the happening of the event . These 10 cases are (3, 6), (4, 5), (4, 6),(5, 4), (5, 5), (5, 6) , (6, 3), (6, 4), (6, 5), & (6, 6)

Step-by-step explanation:

6×6=36 possible outcomes and only 15 possible outcomes summing 8 or more than 8.

Since there are six possible outcomes, the probability of obtaining any side of the die is 1/6. The probability of rolling a 1 is 1/6, the probability of rolling a 2 is 1/6, and so on.

1. The sum of two numbers is 64. One of the numbers is 16 more than 3 times the other. Find the
two numbers.

Answers

Answer:

The two numbers are 52 and 12.

Step-by-step explanation:

x+y=64

x=16+3y

Now, substitute the second equation into the first one.

16+3y+y=64

16+4y=64

4y=48

y=12

Substitute 12 into one of the equations in order to find x.

x=16+3(12)

x=16+36

x=52

A polynomial is graphed. What could the equation of p?
P(c)=(x+3)(c+1)(2x+1)

Answers

Answer:

The answer is B.) p(x)=x(x−2)(2x−7)

Step-by-step explanation:

Khan academy


Which three pieces of information contribute the most to your credit score?

Answers

.....................................

which measurement uses square units​

Answers

Answer:

Area

Step-by-step explanation:

because

area :) hope this helps

6.3.12
The coordinates of point T are (0,5). The midpoint of ST is (2,-2). Find the coordinates of point S.
The other endpoint is
(Type an ordered pair.)

Answers

Answer:

[tex]S = (4,-9)[/tex]

Step-by-step explanation:

Given

[tex]T = (0,5)[/tex]

[tex]Midpoint = (2,-2)[/tex]

Required

Find S

Midpoint is calculated as:

[tex]Midpoint = 0.5(x_1 + x_2,y_1+y_2)[/tex]

So, we have:

[tex](2,-2)= 0.5(0+ x_2,5+y_2)[/tex]

Where x2 and y2 are the coordinates of S

Multiply through by 2

[tex]2 * (2,-2)= 2 * 0.5(0+ x_2,5+y_2)[/tex]

[tex](4,-4)= (0+ x_2,5+y_2)[/tex]

[tex](4,-4)= (x_2,5+y_2)[/tex]

By comparison:

[tex]x_2 = 4[/tex]

[tex]5 + y_2 = -4[/tex]

[tex]y_2 = -4-5[/tex]

[tex]y_2 = -9[/tex]

So:

[tex]S = (4,-9)[/tex]

Type your answer in the box.

y = 10 b = 6

Answers

Answer:

The answer is -60 (I believe)

Step-by-step explanation:

3(-10)-5(6)

-30-30 = -30+-30

-30+-30= -60

The answer is -60

Step-by-step explanation:

If y = 10 and b = 6 Then

3(-y) - 5b

= 3 *( - 10 ) - 5 * 6

= - 30 - 30

= - 60

Hope it will help :)❤

Can someone help me it’s due tomorrowwwww

Answers

Number one is straight angle

number two is obtuse

number three is acute

Number 4 is acute

number 5 is a right angle

number 6 is obtuse

number 7 is right angle

number 8 is obtuse

Find three consecutive numbers whose sum equals
999.​

Answers

Answer:

332, 333, 334

Step-by-step explanation:

First, we acknowledge that the equation that we need to solve will be "x+(x+1)+(x+2)=999" This is because x represents the smallest of three consecutive numbers whose sum is 999. Simplifying this equation will leave us with 3x+3=999 which is simplified further to 3x=996 and again simplified to x=332. X is the smallest number of the three.

The first week of January it
snowed 12 inches. This week
it snowed 16 inches. How
many inches has it snowed in
all?

Answers

Answer:

28 inches

Step-by-step explanation:

the answer is 28 inches

12+16= 28

Number of snow snowed in January = 12 inches

Number of snow snowed this week = 16 inches

Number of snow snowed at all = 12+16

= 28 inches

hence it snowed 28 inches at all

You are selling lemonade. You find that if you set the price at $2.00 per cup, you sell 14 cups over the
course of a day. You also notice that for every $0.10 you decrease the price by, you sell 3 more cups over
the course of the day. Come up with a linear equation to model this situation.

Answers

Step-by-step explanation:

$2.00x-($.10x)=3+x

the x would stand for cups and since you already get 3 more cups in a day than before then you would put 3+x_how many cups you sell. the $2.00 is for how much money each up is. and the -$.10 is subtracting 10 cents for each cup you sell.

I dont know if this is correct but this is how I would make my equation


Find the length of the midsegment of the trapezoid.

Answers

Answer:

29

Step-by-step explanation:

The Trapezoid Midsegment segment theorem states that the length of the midsegment is half the sum of the length of its two parallel sides. Therefore:

MN = ½(AB + DC)

MN = ½(21 + 37)

MN = ½(58)

MN = 29

Which translation transformed the parent function, f(x),
to g(x))?
a translation right 2 units
a translation left 2 units
a translation up 2 units
a translation down 2 units

Answers

Answer:

A. a translation right 2 units

Step-by-step explanation:

JUST DID IT.

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $1800 and his stock in Company B was worth $1930. The stock in Company A has decreased 16% since last year and the stock in Company B has decreased 20%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).

Answers

Answer:

Mar 8, 2020 · 2 answers

Last year, his stock in Company A was worth $7200 and his stock in Company B was worth $3510. The ...

Answer:

18.1%

Step-by-step explanation:

What is the value of -91/5 - 10 + 2/5+ 2(14 1/2-7)

Answers

Answer:

Exact Form:

−64/5

Decimal Form:

−12.8

Mixed Number Form:

−12 4/5

Step-by-step explanation:

bc I used a calculator

8b+3=35. when solving for B what is ur first step ​

Answers

Answer:

Put B on the one side, then the numbers go on the other side

solve this system of equations by graphing . first graph the equations then type the solution .

y=1/5x-5
y=-3/5x-1

PLEASE HELP ILL GIVE 40 POINTA PLEASE DONT SKIP:(((

Answers

9514 1404 393

Answer:

  (x, y) = (5, -4)

Step-by-step explanation:

The Desmos graphing calculator is a handy tool for solving questions like this one. It tells you the solution is ...

  (x, y) = (5, -4)

Exponential function: f(x) = 5 ∗ [tex]3^{x}[/tex]
1. Make the table of values with at least 5 points.
2. Graph the function
3. Is the function increasing or decreasing?
4. What is the domain and range of the function?

Logarithmic function: g(x) = log3 + 2
1. Make the table of values with at least 5 points.
2. Graph the function
3. Is the function increasing or decreasing?
4. What is the domain and range of the function?

Answers

Answer:

See below.

(I only answered the first one b/c the second log function doesn't really make sense, sorry!)

Step-by-step explanation:

1. f(x) = 5 × [tex]3^{x}[/tex]

Plug in 5 points.

x = -2, f(x) = [tex]\frac{5}{9}[/tex]

x = -1, f(x) = [tex]\frac{5}{3}[/tex]

x = 0, f(x) = 5

x = 1, f(x) = 15

x = 2, f(x) = 45

2. Attached below.

3. Increasing

4. Domain: x = all real numbers

Range: f(x) > 0 (because the line never goes below the x-axis)

What relationship between the quantities is shown in the table?
The relationship between quantities is +10.
The relationship between quantities is ×11.
The relationship between quantities is – 30.
The relationship between quantities is + 20.

Answers

Answer:

x11

Step-by-step explanation:

mega brain IQ

The relationship between the quantities x and y is option B. The relationship between quantities is ×11.

What is Direct Variation?

Direct variations are defined as the functions of the form y = kx, where k is a constant.

Here when y increases, x increases and if y decreases, x also decreases.

Given values of x are 1, 2, 3 and 4.

Given values of y are 11, 22, 33 and 44.

We have to find the relationship between x and y.

Let y = f(x).

f(1) = 11, f(2) = 22, f(3) = 33 and f(4) = 44

Clearly we can see that,

f(x) = 11x, which is a direct variation.

When x = 1, f(1) = 1 × 11 = 11

When x = 2, f(2) = 2 × 11 = 22

When x = 3, f(3) = 3 × 11 = 33

When x = 4, f(4) = 4 × 11 = 44

So the relationship is y = x × 11

Hence the relationship between quantities is ×11.

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Your question is incomplete. The complete question is as given below.

Use the table to find the relationship between the two quantities. A 2-column table with 4 rows. Column 1 is labeled x with entries 1, 2, 3, 4. Column 2 is labeled y with entries 11, 22, 33, 44. What relationship between the quantities is shown in the table?

The relationship between quantities is +10.

The relationship between quantities is ×11.

The relationship between quantities is –30.

The relationship between quantities is +20.

factor this quadratic polynomial -8x^2+8​

Answers

8 (-x+1) (x+1)


8 (-x^2+1)

(1-x) (1+x)

Rearrange into (-x+1) (x+1) and add the 8 back where it was

8 (-x+1) (x+1)

Answer:

This is my answer

Step-by-step explanation:

-8×12+8

-96+8

-88____so this is the answer I solved it properly

If 1=3. 2=3. 3=5. 4=4. 5=4. Then, 6=?

Answers

Question: If 1=3. 2=3. 3=5. 4=4. 5=4. Then, 6=?

Answer: Like wise, If 1=3.2=3 3=5 4=4 5=4 Than 6=3

Because of six. Six split in two is 3 therefore 6=3

More:  7=5, 8=5, 9=4, 10=3

Hope this helps~~~

Harold and Maude plan to take a cruise together, but they live in separate cities. The cruise departs from Miami, and they each book a flight to arrive in Miami an hour before they need to be on the ship. Their travel planner explains that Harold's flight has an 80% chance of making it on time for him to get o the ship and that Maude's flight has a 90% chance of making it on time. Assume that the event of Harold making it on time is independent of the event of Maude making it on time. What is the probability that at least one of Harold and Maude will make it to the cruise

Answers

Answer:

98% probability that at least one of Harold and Maude will make it to the cruise

Step-by-step explanation:

Independent probabilities:

When two events are independent, the probability of the two events happening simultaneously is the multiplication of each probability.

Probability that none makes it to the cruise:

Harold's flight has an 80% chance of making it, so 100 - 80 = 20% probability of missing.

Maude's flight has a 90% chance of making it on time, so 100 - 90 = 10% probability of missing.

Both missing: 0.2*0.1 = 0.02.

2% probability of both missing.

Probability that at least one makes it to the cruise:

Either both miss, or at least one makes it. The sum of the probabilities of these events is 100%. So

2 + p = 100

p = 98%

98% probability that at least one of Harold and Maude will make it to the cruise

if you know that there are 60 minutes in an hour how could you find the number of hours in 300 minutes​

Answers

Answer:

300/60=5 Hours

Hope it helps

Answer:

5hours

Step-by-step explanation:

................

300÷60

What expression is equivalent to
2/3 X 5

Answers

Answer:

1/3

Step-by-step explanation:

1/3 can be used as an expression that is exactly the same as 2/3x5.

When you multiply 2/3 x 5-

Look here if you need help solving 2/3 X 5: (2/3 x 5/1...is the simplest way to multiply the two, make sure to multiply 2 by 5 and 3 by 1 to get your answer.)(5x2=10...3x1=3)

-you get 10/3. This answer simplified is 1/3. So in the end, 1/3 is a great expression or answer to use as an equivalent to the equation 2/3 x 5.

Hoped this helped! :)

Find the distance between P and Q. P(-3, -4), Q(6, -7)

Answers

Answer:

Please find attached pdf

Step-by-step explanation:

Step-by-step explanation:

P=(-3,-4)=(X1,Y1)

Q=(6,-7)=(X2,Y2)

Pq=root under( x2-x1)^2+(y2-y1)^2

= root under {6-(-3)}^2+{-7-(-4)}^2

= {6+3}^2+{-7+4}^2

= 9^2+(-3)^2

= 81+9

= 90

= 3root under10 unit.#

The sum or two numbers is 59. the larger number is 15 more than the smaller number. What are the numbers

Answers

Answer: 37 and 22

Step-by-step explanation:

x + y = 59

x = 15 + y (substitute x as 15 + y into the first equation)

15 + y + y = 59

2y + 15 = 59

2y = 44

y = 22

substitute y as 22 into one of the equations

x = 15 + 22

x = 37

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