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Online Time Usage Narrative

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Online Time Usage Narrative
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.
-Refer to Online Time Usage Narrative. If the distribution of the original measurements is not normal, you can still use the standard normal distribution to construct a confidence interval for Online Time Usage Narrative 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. -Refer to Online Time Usage Narrative. 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? , the average online time for all users of this Internet server. Why?

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As long as the sample size n is large (i...

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