History, 22.01.2021 07:40 torresnoemi899

The principal of a school surveyed 200 students on the time they spent on the Internet after school . The mean and the standard deviation of the sample data are 2.4 hours and 0.8 hours , respectively . What is the margin of error for 95 % confidence interval ?

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The principal of a school surveyed 200 students on the time they spent on the Internet after school...