The mean time taken to take a quiz by 55students was found to be 13 minutes with a SD of 2.5 minutes. Find a 99% confide

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answerhappygod
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The mean time taken to take a quiz by 55students was found to be 13 minutes with a SD of 2.5 minutes. Find a 99% confide

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The mean time taken to take a quiz by 55students was found to be13 minutes with a SD of 2.5 minutes. Find a 99% confidence intervalfor the population mean, µ.
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