Based on all student records at Camford University, students spend an average of 5.5 hours per week
Question:
Based on all student records at Camford University, students spend an average of 5.5 hours per week playing organized sports. The population’s standard deviation is 2.2 hours per week. Based on a sample of 121 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to make various estimates.
a. Compute the standard error of the sample mean.
b. What is the chance HLI will find a sample mean between 5 and 6 hours?
c. Calculate the probability that the sample mean will be between 5.3 and 5.7 hours.
d. How strange would it be to obtain a sample mean greater than 6.5 hours?
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Related Book For
Basic Statistics For Business And Economics
ISBN: 9781260187502
9th Edition
Authors: Douglas A. Lind, William G Marchal, Samuel A. Wathen
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