A discount store is trying to decide whether to use a single waiting line for available cashiers. The waiting times for 25 randomly selected customers was found to have a standard deviation of 1.7 minutes. Construct a 95% confidence interval for the population variance. What assumptions must be made to construct a valid confidence interval?© BrainMass Inc. brainmass.com October 9, 2019, 5:28 pm ad1c9bdddf
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