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Masteriza [31]
2 years ago
14

How many inches around is the crust if the diameter of the pizza is 16 inches?

Mathematics
1 answer:
Olegator [25]2 years ago
6 0

Answer:

50.27 in

Step-by-step explanation:

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Consider independent simple random samples that are taken to test the difference between the means of two populations. The varia
Arturiano [62]

Answer:

d. t distribution with df = 80

Step-by-step explanation:

Assuming this problem:

Consider independent simple random samples that are taken to test the difference between the means of two populations. The variances of the populations are unknown, but are assumed to be equal. The sample sizes of each population are n1 = 37 and n2 = 45. The appropriate distribution to use is the:

a. t distribution with df = 82.

b. t distribution with df = 81.

c. t distribution with df = 41.

d. t distribution with df = 80

Solution to the problem

When we have two independent samples from two normal distributions with equal variances we are assuming that  

\sigma^2_1 =\sigma^2_2 =\sigma^2

And the statistic is given by this formula:

t=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{S_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}

Where t follows a t distribution with n_1+n_2 -2 degrees of freedom and the pooled variance S^2_p is given by this formula:

\S^2_p =\frac{(n_1-1)S^2_1 +(n_2 -1)S^2_2}{n_1 +n_2 -2}

This last one is an unbiased estimator of the common variance \sigma^2

So on this case the degrees of freedom are given by:

df= 37+45-2=80

And the best answer is:

d. t distribution with df = 80

5 0
2 years ago
PLease help!!!! i really please hep
n200080 [17]

\pink{1}^{st}\mathtt{Row\ :-} missing letter is 2

\pink{2}^{nd}\mathtt{Row\ :-} missing letter is 3

\pink{3}^{rd}\mathtt{Row\ :-} missing letter is 1

Hope it is helpful to you ☺️

5 0
2 years ago
Question 1 (3 points)
Basile [38]

Answer:

The mean is 12, The median is 13, The mode is 14, and the range is 8.

The second choice is the correct answer.

Explanation:

  1. I found the mean by adding up all the numbers and dividing by the number of numbers, or sun divided by count. The sum of the numbers was 132, and the count was 11. I divided 132 by 11 to get 12.
  2. I listed the numbers in order from least to greatest. The data set was: 7, 8, 10, 12, 12, 13, 13, 14, 14, 14, 15
  3. I found the median by crossing off the number on each end of the data set, and kept going. For example, I crossed off 8, and then 15, and then 10, and then 14 and so on until I got to the middle number. (Keep in mind, if there are two middle numbers, find the mean of them [add them and divide by two])
  4. The mode is the number that shows up the most in the data set, so I looked at the data set and saw that 14 showed up 3 times, more times than any other number.
  5. The range is the difference between the greatest and least number (maximum and minimum) so I just subtracted 15 - 7 to get a difference of 8.
6 0
3 years ago
What is 87+56-78=?? if u know the answer plz give it to me right <br> k
PilotLPTM [1.2K]
It equals to 65 for the exact answer
4 0
2 years ago
Read 2 more answers
PLEASE HELP! I NEED THE ANSWER SOON!
Wewaii [24]

Answer:

6 * (m + n)

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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