Mathematics, 11.02.2022 20:00, xcji7384

The standard deviation of a simple random sample of 15 customer waiting times is found to be 4.8 minutes. Find the test statistic to test the claim that the standard deviation of all customer
waiting times is greater than 3.5 minutes. Use a 0.01 significance level.

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The standard deviation of a simple random sample of 15 customer waiting times is found to be 4.8 m...