A random sample of 663 teens who said they did not typically eat fast food reported an average daily calorie intake of 2258, with standard deviation 1519. A random sample of 413 teens who said they did typically eat fast food reported an average daily calorie intake of 2637, with standard deviation 1138. The two populations are moderately positively skewed. Based on the above description, which of the following conditions are met for conducting a hypothesis test for the equality of two means?

a. Both samples are random
b. Samples are independent of one another
c. Both samples are normal enough given the sample size
d. Two population means need to be the same

Answers

Answer 1

Answer:

Option B

Step-by-step explanation:

The sample populations are independent of each other and hence for comparing of mean of two population it is very essential that the two populations independent of each other.

Now here one population set consist of only people who eat fast food and the other set of population consists of people who do not eat fast food.


Related Questions

What is the solution to x+4y=-1 and 2x + 5y=10??????

Answers

And they were roommates
x=12
y=-4
Wanna talk??
Sorry I had the answer on two pages,; can’t post more than one photo

The Valley Middle School library just added 250 books to the shelves. Of those books, 40% are fiction. How many of the new books are fiction?

Answers

Answer:

100

20 = 50

50 x2

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

250 books × 40%

= 100

other way to solve it is

250 × 0.40

= 100 fiction books

Someone help me, please:)

Answers

Answer:

12

Step-by-step explanation:

This is the correct answer:)

Write an equation that shows the relationship 40% of 140 is x

Answers

Answer:

x=140times0.4

Step-by-step explanation:

then subtract your anser from 140

x/(x-2)*(x+2)*(x-1) into partial fraction
​no matter how many times i redo it my answers just not matching with that of my books. can we have different answers?

Answers

Answer:

((-1 + x) (2 + x) X)/(-2 + x)

Step-by-step explanation:

1 (x^(2)x)/(x-2)+(xx)/(x-2)-(2x)/(x-2)

2 (x(x+1)-2)x)/(x-2)

3 (x(xx+x)-2x)/(x-2)

4(x^(2)x+xx-2x)/(x-2)

5 (-2 + x + x^2) X)/(-2 + x)

Root

X = 0 , X-2=0

Roots

X=-2

X=1

Evaluate the expression when x-=12.5 and y=6 12x-3y^2

Answers

Answer:

Step-by-step explanation:

Expresión x--12.5*y-612*x-3*y-2 = 9.5*y-611.0*x-2.0

Directions: Find the missing term in each pair of equivalent ratios.
1. 3:4 = 21:n
2. 1:5 = n : 40
3. 2 : n = 8 : 12
4. n = 2
42 7

5. 4 = 20
9 n

Answers

Step-by-step explanation:

1 multiplied by 7

3;4=21:28

2) multiplied by 8

1:5= 8:40

3)divided by 4

2:3= 8:12

4) multiplied by 6

12/42= 2/7

5) multiplied by 5

4/9= 20/45

find the value of x and round

Answers

Answer:

X=80.4

Step-by-step explanation:

Lol

Step-by-step explanation:

x= 78 approximately

hope this is correct

A quality-assurance inspector periodically exam-ines the output of a machine to determine whether it is properly adjusted. When set properly, the machine pro-duces nails having a mean length of 2.000 inches, with a standard deviation of 0.070 inches. For a sample of 35 nails, the mean length is 2.025 inches. Using the 0.01 level of significance, examine the null hypothesis that the machine is adjusted properly. Determine and interpret the p-value for the test.

Answers

Answer:

Step-by-step explanation:

From the given information;

The null hypothesis & alternative hypothesis:

[tex]\mathbf{H_o:\mu = 2} \\ \\ \mathbf{H_1 : \mu \ne 2}[/tex]

The test statistics can be computed as:

[tex]Z = \dfrac{\overline x - \mu}{\dfrac{\sigma}{\sqrt{n}}}[/tex]

[tex]Z = \dfrac{2.025- 2}{\dfrac{0.07}{\sqrt{35}}}[/tex]

[tex]Z = \dfrac{0.025}{\dfrac{0.07}{\sqrt{35}}}[/tex]

[tex]Z =2.11[/tex]

The p-value = 2(Z > 2.11)  since this is a two-tailed test

The p-value = 2( 1 - Z < 2.11)

The p-value = 2 (1 -0.9826)

The p-value = 2 (0.0174)

The p-value = 0.0348

Decision Rule: To reject the [tex]\mathbf{H_o}[/tex]  if the p-value is less than [tex]\mathbf{H_o}[/tex]

Conclusion: We fail to reject [tex]\mathbf{H_o}[/tex] and conclude that the population mean = 2, thus the machine is properly adjusted.

Find the simplified form of the expression. Give your answer in scientific notation.
(4 * 10^10)(9x10^-5)

Answers

Step-by-step explanation:

Given

(4*10^10)(9*10^-5)

= 36 * 10^10 - 5

= 36 * 10^5

= 3.6 * 10^6

Hope it will help :)

A Ferris wheel has a radius of 48 feet. What is the distance a passenger will travel one time around the Ferris wheel?
96.0 feet
150.8 feet
301.6 feet
603.2 feet
HURRY PLEASEE
✿✿✿✿✿✿

Answers

96 ft
Radius is only half so just times 2 and get 96
301.6 (C= 2 • r • 3.14)

Determine if the following function is even, odd or neither.
f(x) = 4x2 – 8x + 5

Answers

9514 1404 393

Answer:

  neither

Step-by-step explanation:

A polynomial consisting of even-degree terms only is even.

A polynomial consisting of odd-degree terms only is odd.

The given f(x) polynomial has both even- and odd-degree terms, so is neither.

PLEASE HELP!
4x + 2y = 6
-2x + 2y = 18
There combined answer please!
SHOW YA WORK

Answers

your answer, in your set notation, is
{-2, 7}

write 7^3 × √ 7 as a single power of 7​

Answers

Step-by-step explanation:

7^3 × 7^(1÷2)

= 7^(3+ 0.5)

=7^3.5 ans

Find the value of x. I WILL GIVE 100 POINTS ANSWER QUICK!

Answers

Answer:0.714 not sure exactly  if i need to simplify, mullitiply,  or divide.

Step-by-step explanation:

the answer is 0.714 ! hope this helped clarify

Write an exponential function in the form y=ab^xy=ab
x
that goes through points (0, 13)(0,13) and (3, 832)(3,832).

Answers

Answer: Down Below

Step-by-step explanation: y=ab%5Ex

that goes through points (0, 10) and (2, 490)

y=ab%5Ex.......plug in (0, 10)

10=ab%5E0

10=a%2A1

a=10

so far

y=10b%5Ex......plug in (2, 490)

490=10b%5E2

b%5E2=490%2F10

b%5E2=49

b=sqrt%2849%29

b=7

your function is:+y=10%2A7%5Ex

A function assigns the values. The exponential function that goes through (0, 13) and (3, 832) is y=13(4)ˣ.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

Given the exponential eqation is y=abˣ, substitute any one of the point in equation we will get,

13 = ab⁰

13 = a ₓ 1

a = 13

Therefore, the function can be written as y=13bˣ.

Substitute other point in the equation,

832 = 13 (b³)

b³ = 832/13

b³ = 64

b = 4

Hence, the exponential function that goes through (0, 13) and (3, 832) is y=13(4)ˣ.

Learn more about Function:

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At lunch time, Benjamin often borrows money from his friends to buy snacks in the school cafeteria. Benjamin borrowed $0.75 from his friend Clyde five days last week to buy chips. Represent the amount Benjamin borrowed as the product of two rational numbers; then, determine how much Benjamin owed his friend last week.

Answers

Answer:

3.75

Step-by-step explanation:

if the measure of angle a is 109, what is the measure of angle b

Answers

Answer:

71

Step-by-step explanation:

Those are supplementary angles meaning they add up to 180 degrees

180 - 109 = 71

That would make b 71 degrees

Answer:

71 degrees !!

Step-by-step explanation:

Since the angles A and B both are next to each other, they form a linear pair. Since they are a linear pair, they both add up to 180 degrees (same as a straight angle!) So, if A is 109, you would simply subtract that from 180, and you'd get 71 !!

180-109= 71 !!

I hope this helps... have a great day !

22×(4.5×4.5×4.5+9)=

what is the answer? ​

Answers

2202.75 is the answer

Answer:

2202.75

Step-by-step explanation:

calculator

y
10
8
6
4
2
X
-10
-8
-6
-4
-2.
NS
4
ON
8
10
-2
-4.
-6
-8
-10

Answers

What are we supposed to do

A line segment has an endpoint at (-7, 11) and (-6, 4), what is the length of
the segment?

Answers

Answer:

d = 5√2 units

Step-by-step explanation:

Let's use the distance formula: d = √[(x₂ - x₁)² + (y₂ - y₁)²]

Plug in the values with your endpoints.

d = √[(-6 - (-7))² + (4 - 11)²]

Solve within the parentheses.

d = √[(1)² + (-7)²]

Solve the exponents.

d = √[1 + 49]

Solve within the brackets.

d = √50

Simplify the square root.

25 • 2 = 50

√25 • √2 = √50

5 • √2 = √50

d = 5√2 units

Hope this helps!

650^4×650^5= 650 to the what power​

Answers

Answer:

650^9

power gets added when base is same

650^9!! hope this helps! feel free to clarify

Michael and Imani go out to eat for lunch.

Part A: If their food and beverages cost $25.30 and there is an 8% meals tax, how much is the bill?

Part B: If Michael and Imani add an 18% tip to the bill, what does their lunch cost in total?

Answers

Answer:

Step-by-step explanation:

part=A

So, we must find out what the total bill cost is such that we begin by multiplying the price with the tax such that  $25.30(0.08) = $2.024.

Then we add the tax to the price such that

$25.30+2.024 = $27.32

In the case of adding an 18% tip,

So continuing on from the above post, $27.32 is the total after taxes. Then we add an 18% tip which is  

$27.32 (.18) = $4.92..........Then, we add it to the $27.32 to get  

$27.32 + $4.92 = $32.24 in total!

Translate this sentence into an equation.

64 is the product of Goran’s height and 4

Use the variable g to represent Goran’s Height

Answers

Answer:

g×4=64

product means multiply

so that would mean Gorans height times 4 and that would all equal 64

hope this helped

Would the mass of a mouse more likely be 150 gram or 150 kilograms

Answers

Answer:

150g most likely

Step-by-step explanation:

kg are a thousand times more than a gram

Evaluate the function when x = 12.

{(-9, 1), (3, 4), (6, 2), (12, -6)}

A. -6
B.1
C.4
D.2

Answers

Answer:

It is the second one B

Step-by-step explanation:

nmqlwmqlqmwmwmmwmqmmqm​

Answers

Answer:

nmqlwmqlqmwmwmmwmqmmqmnmqlwmqlqmwmwmmwmqmmqmnmqlwmqlqmwmwmmwmqmmqm

Plssssssssss help because i need to go to basketball practice

Answers

Answer:

The answer is a= 5

Step-by-step explanation:

hope this helps

Answer: a=5

Step-by-step explanation: 3(5)=15

go back to practice :)

SOEMOENN HELP ME PLEASE WITH A MATH PROBLME If x is 6, what is:
7- X

Answers

Answer:

1

Step-by-step explanation:

7-6=1

Answer:

1

Step-by-step explanation:

7-x

x=6

7-6=1

The regular price of an item at a store is $2,000. If the sale price is $1,120, what percent is the discount?

Answers

Answer:

$3,120

Step-by-step explanation:

$2,000

+$1,120

---------------

    $3,120

Hence, the percent is the discount is $ [tex]3120[/tex].

What is the percentage?

A percentage is a number or ratio expressed as a fraction of [tex]100[/tex]. It is often denoted using the percent sign, "%".

Here given that,

The regular price of an item at a store is $[tex]2,000[/tex]. If the sale price is $[tex]1,120[/tex].

So,

[tex]2,000+1120=3120[/tex] $

Hence, the percent is the discount is $ [tex]3120[/tex].

To know more about the percentage

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