Mathematics, 13.12.2021 23:10 nowenpimu586

A random sample of 174 college students was asked to indicate the number of hours per week that they surf the internet for either personal information or material for a class assignment. The sample mean response was 6.06 hours and the sample standard deviation was 1.43 hours. a. Based on these results, construct a 90% confidence interval for the population mean.
b. The survey was reported in a local newspaper, and the confidence interval reported ranged from 5.96 to 6.16. What confidence level did the newspaper use?

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A random sample of 174 college students was asked to indicate the number of hours per week that they...