Variability in customer arrival rates at a store can be problematic, not only fo

Question

Variability in customer arrival rates at a store can be problematic, not only for customers in the form of waiting time, but also for the stores since they often must rotate workers to meet higher demand at certain key areas such as at cash registers. Suppose that random samples of customer arrival rates were compiled from two different store locations (First Avenue and King Street) within the same chain of grocery stores. The Excel summary results are shown below. Using this output, specify whether each of the following conclusions is correct or incorrect.

You must make a selection for each option. Click once to place a check mark for correct answers and click twice to place an "x" for the wrong answers.

_______________________________________________________

F-Test for Equality of Variance

At the 5% significance level, we conclude that the two stores have different customer arrival rate variances. At the 2.5% significance level, we conclude that the variability in customer arrival rate is higher at the First Avenue store location than at the King Street store location. At the 10% significance level, we conclude that the variability in customer arrival rate is higher at the King Street store location than at the First Avenue store location. At the 10% significance level, we conclude that the two stores have different customer arrival rate variances.

Explanation / Answer

Given

F=1.84

P=0.0604

conclusion:

P<0.05

At the 5% significance level, we conclude that the two stores have different customer arrival rate variances.

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