Mathematics, 19.03.2020 21:34 tjjjjjjjjjjjjjjjjjjj

The time spent, in hours, of teenagers on social media per year are normally distributed with a population standard deviation of 442 hours and an unknown population mean. If a random sample of 24 teenagers is taken and results in a sample mean of 1330 hours, find a 99% confidence interval for the population mean. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Round your answer to TWO decimal places.

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The time spent, in hours, of teenagers on social media per year are normally distributed with a popu...