Suppose That the Amount of Time Teenagers Spend on the Internet

question 13

Short Answer

Suppose that the amount of time teenagers spend on the Internet is normally distributed, with a standard deviation of 1.5 hours. A sample of 100 teenagers is selected at random, and the sample mean is computed as 6.5 hours.
Determine the 95% confidence interval estimate of the population mean, changing the sample mean to 8.5 hours.

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Definitions:

Accurate

A term describing information or measurements that are correct, precise, and free of errors.

Cent

A form of money present in multiple countries, representing one one-hundredth of a decimal currency such as the dollar or euro.

Accurate

The quality of being correct in all details; exactness.

Cent

A monetary unit in various countries, equal to one-hundredth of a basic unit of currency.