What will be the effect on the confidence interval

Reference no: EM131067958

In a recent study of 92 eighth graders, the mean number of hours per week that they watched television was 22.6. Assume the population standard deviation is 5.2 hours.a) Find the 99% confidence interval of the mean.b) If the standard deviation is doubled to 10.4, what will be the effect on the confidence interval?

Reference no: EM131067958

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