Solved: Use a significance level of 0.05 for all tests

Chapter 9, Problem 3

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Use a significance level of 0.05 for all tests below.Technology Use the cell phone data collected for data project 2 in Chapter 8 to complete this problem. Test the claim that the mean length for outgoing calls is the same as that for incoming calls. Test the claim that the standard deviation for outgoing calls is more than that for incoming calls.

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