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Western is studying ways to reduce the amount of time students spend in line to purchase coffee at Starbucks. With a sample size of 100 students, Western found that the mean amount of time spent in line is 20 minutes. The 95% confidence interval based on this estimate has a margin of error equal to 2. Which of the following interpretations is correct? O A. Before we select the sample, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O B. If we select a different sample with same size, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O C. A and B are correct. D. A and B are incorrect.

Western is studying ways to reduce the amount of time students spend in line to purchase coffee at Starbucks. With a sample size of 100 students, Western found that the mean amount of time spent in line is 20 minutes. The 95% confidence interval based on this estimate has a margin of error equal to 2. Which of the following interpretations is correct? O A. Before we select the sample, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O B. If we select a different sample with same size, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O C. A and B are correct. D. A and B are incorrect.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Western is studying ways to reduce the amount of time students spend in line to purchase coffee at Starbucks. With a sample size of 100 students, Western found that the mean amount of time spent in line is 20 minutes. The 95% confidence interval based on this estimate has a margin of error equal to 2. Which of the following interpretations is correct? O A. Before we select the sample, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O B. If we select a different sample with same size, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O C. A and B are correct. O D. A and B are incorrect.
Transcribed Image Text:Western is studying ways to reduce the amount of time students spend in line to purchase coffee at Starbucks. With a sample size of 100 students, Western found that the mean amount of time spent in line is 20 minutes. The 95% confidence interval based on this estimate has a margin of error equal to 2. Which of the following interpretations is correct? O A. Before we select the sample, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O B. If we select a different sample with same size, the probability that the resulting sample mean lies between 18 and 22 is 0.95. O C. A and B are correct. O D. A and B are incorrect.
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