A sample of 35 task has been considered and was analyzed. It was found out that the values 19 and 4.6 are obtained for the sample mean and the population standard deviation, respectively. Construct a 98% confidence interval for the population mean. Solve the following questions and express your final answer in 2 decimal places whenever possible. a. lower confidence interval of the population mean b. The value of 18 is within the boundary of 98% confidence interval The value of 18 is NOT within the boundary of 98% confidence interval

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