A random sample of 49 observations with a mean of 97 is selected from a normally distributed population. Assume the population standard deviation is 16. 1. In developing a(n) 93% confidence interval estimate for the population mean, determine the following values: a) [Do not round ] Point Estimate = b) [2 decimal places ] Significance level (a) = Round the critical value to two (2) decimal places and use the rounded value to calculate the remaining parts. c) [Enter a positive value] Critical value = d) [3 decimal places ] Standard Error of the Mean = e) [1 decimal place ] Margin of Error = f) [1 decimal place ] Lower Confidence Limit = 9) [1 decimal place] Upper Confidence Limit =2. How large a sample is required to keep the margin of error within 2 units with 93% confidence? Report your answer as an integer