The owners of the Westfield Mall wished to study customer shopping habits. From earlier studies, the owners
Question:
a. Develop a test of hypothesis to determine if the mean time spent in the mall changed.
Use the .10 significance level.
b. Suppose the mean shopping time actually increased from 0.75 hour to 0.79 hours. What is the probability of making a Type II error?
c. When Brunner and Swanson reported the information in part (b) to the mall owners, the owners believed that the probability of making a Type II error was too high. How could this probability be reduced?
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Related Book For
Statistical Techniques In Business And Economics
ISBN: 356
16th Edition
Authors: Douglas Lind, William Marchal
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