Question: Find the minimum sample size n needed to estimate mu for the given values of c, sigma and E c = 0.95 sigma= 6.6 and

Find the minimum sample size n needed to estimate mu for the given values of c, sigma and E c = 0.95 sigma= 6.6 and E = 2 Assume that a preliminary sample has at least 30 members You are given the sample mean and the population standard deviation . Use this information to construct the 90% and 95% confidence intervals for the population mean Interpret the results and compare the widths of the confidence intervals From a random sample of 78 dates . the mean record high daily temperature in a certain city has a mean of 82.84F . Assume the population standard deviation is 14 .71F Find the critical value t for the confidence level c = 0 . 98 and sample size n=19 ( Round to the nearest thousandth as needed . ) Find the critical value t for the confidence level c = 0.95 and sample size n=22 ( Round to the nearest thousandth as needed . )

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