MAT161 的题求解答,急!在线等
MAT161 的题求解答,急!在线等
An educational research firm is interested in estimating the mean number of hours per week that all American eighth-graders watch television. Sample 81 students. Average 18.5 hours per week. Standard deviation 9.4hours.
Construct an 80% confidence interval to estimate the mean number of hours per week that all population watch television?
An educational research firm is interested in estimating the mean number of hours per week that all American eighth-graders watch television. Sample 81 students. Average 18.5 hours per week. Standard deviation 9.4hours.
Construct an 80% confidence interval to estimate the mean number of hours per week that all population watch television?
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