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K The data table contains waiting times of customers at a bank where customers enter...

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K 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 of waiting times is less than 1 7 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 05 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 o 1 7 minutes HA 1 7 minutes OC Ho o 1 7 minutes HA 0 1 7 minutes XX b Compute the test statistic x 0 Round to two decimal places as needed B Ho oz HA 0 D Ho o HA O Customer Waiting Times 7 9 7 3 7 4 7 3 7 4 7 7 7 9 7 3 7 4 6 7 6 8 8 1 86 6 6 7 1 8 6 Customer Waiting Times in minutes E NR9326625 7 1 6 9 6 9 7 3 7 4 7 7 7 8 6 7 697 9 2 7 6 7 6 6 2 6 5 7 6 6 6 6 2 6 5 6 5 7 7 daaaaREENREI 5 3 6 4 7 2 6 8 6 7 6 4 6 6 8 6 8 8 6 8 6 9 7 2 7 1 7 8 7 8 7 7 7 4 6 6 6 4 6 2 7 8 7 5 7 7 7 3 7 2 6 2 N160

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