The data table contains waiting times of customers at a bank where customers enter a single waiting line that feeds three teller

Question

The data table contains waiting times of customers at a bank where customers enter a single waiting line that feeds three teller windows Test the claim that the standard deviation o waiting times is less than 1 5 minutes which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window Use a significance level of 0 01 Assume that the sample is a simple random sample selected from a normally distributed population Complete parts a through d below Click on the icon to view the data a Identify the null and alternative hypotheses Choose the correct answer below OA Ho 1 5 minutes HA 0 1 5 minutes OC Ho o 1 5 minutes HA 1 5 minutes b Compute the test statistic Round to two decimal places as needed B Ho o 1 5 minutes HA 0 1 5 minutes D Ho o 1 5 minutes HA 0 1 5 minutes

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