In a recent study of 35 ninth-grade students, the mean number of hours per week that they played video games was 16.6. The standard deviation of the population was 2.8. Find the 95% confidence interval of the population mean of the time ninthgrade students playing video games. (14.38,18.23) O (15.21,17.96) O (15.67,17.53) (16.17,16.93)

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