Use z table for first question

Construct a 90% confidence interval to estimate the population proportion with a sample proportion equal to 0.44 and a sample size equal to 100. Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. A 90% confidence interval estimates that the population proportion is between a lower limit of and an upper limit of ] (Round to three decimal places as needed.) Construct a 90% confidence interval to estimate the population mean when x = 57 and s = 11.8 for the sample sizes below a) n = 15 b) n = 40 c) n= 56 a) The 90% confidence interval for the population mean when n = 15 is from a lower limit of to an upper limit of ]. (Round to two decimal places as needed.)