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The mean number of hours of study time per week for a sample of 562 students is 23. If the margin of error for the population mean with a 98% confidence interval is 2.1, construct a 98% confidence interval for the mean number of hours of study time per week for all students.

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Answer:

The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).

Step-by-step explanation:

Confidence interval:

Sample mean plus/minus the margin of error.

In this question:

Mean of 23.

Margin of error 2.1.

Then

23 - 2.1 = 20.9

23 + 2.1 = 25.1

The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).