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The manager of the local health club is interested in determining the number of times members use t weight room per month. She takes a random sample of 15 members and finds that over the course of month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the moi number of visits is normally distributed, which of the following represents a 95% confidence interval average monthly usage of all health club members? O a. 11.2 + 1.83 O b. 11.2 ± 1.74

The manager of the local health club is interested in determining the number of times members use t weight room per month. She takes a random sample of 15 members and finds that over the course of month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the moi number of visits is normally distributed, which of the following represents a 95% confidence interval average monthly usage of all health club members? O a. 11.2 + 1.83 O b. 11.2 ± 1.74

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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The manager of the local health club is interested in determining the number of times members use the weight room per month. She takes a random sample of 15 members and finds that over the course of a month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the monthly number of visits is normally distributed, which of the following represents a 95% confidence interval for the average monthly usage of all health club members? а. 11.2 + 1.83 O b. 11.2 1.74 Ос. 11.2 + 1.77 d. 11.2 + 1.62
Transcribed Image Text:The manager of the local health club is interested in determining the number of times members use the weight room per month. She takes a random sample of 15 members and finds that over the course of a month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the monthly number of visits is normally distributed, which of the following represents a 95% confidence interval for the average monthly usage of all health club members? а. 11.2 + 1.83 O b. 11.2 1.74 Ос. 11.2 + 1.77 d. 11.2 + 1.62
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