Question: Using the data in the Excel file Computer Repair Times, determine if the company can claim that its average repair time is less than 15

Using the data in the Excel file Computer Repair Times, determine if the company can claim that its average repair time is less than 15 days.

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Computer Repair Times Sample Repair Time Days 1 18 H0 mean 15 2 15 H1 mean 15 3 17 4 9 5 37 Xbar 149... View full answer

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