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A school reports that the mean number of hours their students study each week is 15 hours. The students believe the mean is not 15 hours. To test their claim, they select a random sample of 49 students and find the sample mean is 16.163 hours with a sample standard deviation of 4.41 hours. Is there any evidence to support their belief at a 0.05 level of significance? 4.

A school reports that the mean number of hours their students study each week is 15 hours. The students believe the mean is not 15 hours. To test their claim, they select a random sample of 49 students and find the sample mean is 16.163 hours with a sample standard deviation of 4.41 hours. Is there any evidence to support their belief at a 0.05 level of significance? 4.

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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Can you answer number 4?
Cholesterol level in a particular male population is assumed to follow a normal distribution. A random sample of size 16 has a sample mean of 245 and a standard deviation of 32 units. Construct and interpret a 95% confidence interval for the mean cholesterol level in the population. 3. A school reports that the mean number of hours their students study each week is 15 hours. The students believe the mean is not 15 hours. To test their claim, they select a random sample of 49 students and find the sample mean is l6.163 hours with a sample standard deviation of 4.41 hours. Is there any evidence to support their belief at a 0.05 level of significance? 4.
Transcribed Image Text:Cholesterol level in a particular male population is assumed to follow a normal distribution. A random sample of size 16 has a sample mean of 245 and a standard deviation of 32 units. Construct and interpret a 95% confidence interval for the mean cholesterol level in the population. 3. A school reports that the mean number of hours their students study each week is 15 hours. The students believe the mean is not 15 hours. To test their claim, they select a random sample of 49 students and find the sample mean is l6.163 hours with a sample standard deviation of 4.41 hours. Is there any evidence to support their belief at a 0.05 level of significance? 4.
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