An Internet Server Conducted a Survey of 400 of Its

Essay

An Internet server conducted a survey of 400 of its customers and found that the average amount of time spent online was 12.5 hours per week with a standard deviation of 5.4 hours.
What shape do you think the random variable x, the number of hours spent online, has?
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If the distribution of the original measurements is not normal, you can still use the standard normal distribution to construct a confidence interval for , the average online time for all users of this Internet server. Why?
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Construct a 95% confidence interval for the average online time for all users of the particular Internet server.
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If the Internet server claimed that its users averaged 15 hours of use per week, would you agree or disagree?
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Explain.
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