1. In developing a(n) 95% 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 parts d) to g). 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 = g) [1 decimal place] Upper Confidence Limit = 2. How large a sample is required to keep the margin of error within 3 units with 95% confidence? Report your answer as an integer