Question: Fifty randomly selected individuals were timed completing a tax form. The sample mean was 23.6 minutes; the sample standard deviation was 2.4 minutes. A 99%

Fifty randomly selected individuals were timed completing a tax form. The sample mean was 23.6 minutes; the sample standard deviation was 2.4 minutes. A 99% confidence interval for the mean time required by all individuals to complete the form is about:

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