Please answer all questions listed

Determine the sample size n needed to construct a 95% confidence interval to estimate the population mean when a = 88 and the margin of error equals 14. Click the icon to view a table of standard normal cumulative probabilities. n= (Round up to the nearest integer.) Determine the sample size n needed to construct a 90% confidence interval to estimate the population proportion when p = 0.41 and the margin of error equals 4% n= (Round up to the nearestinteger.) Determine the sample size needed to construct a 95% confidence interval to essmate the average GPA for the student population at a college with a margin of error equal to C.4. Assume the standard deviation of the GPA for the student population Is 20 The sample size needed is (Round up to the nearest A restaurant would like to estimate the proportion of tips that exceed 18% of it orvat with a margin of error of no more than 5% to estimate the propos The sample size needed i [Round up to the nearest integer )