A random sample of 40 PCC students are surveyed about their commuting time. A sample mean of 24.5 minutes and a sample standard deviation of 5.8 minutes were calculated from the survey. Construct a 95% confidence interval for the average commuting time for all PCC students. Round your answer to the nearest tenth of a minute.

Give the degree of freedom:

Give the critical value: Round to three decimal digits

Calculate the Margin of Error: Round to three decimal digits

Confidence Interval: ( , )Round your answer to the nearest tenth of a minute.



Answer :

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