Answer Question 20 to Question 24 for this problem: An online store advertises that it will deliver your order Within 15 days of purchase, We would like to perform a hypothesis test [using the prvalue method) to see if their claim is wrong, and it takes more than 15 days, Asarnple of 49 past (ustomers is t; The average delivery time in the sample was 16.2 days with the standard deviation of 5.6 days Question 20 Problem 3- Part a The correct distribution to use in this hypothesis test is [59'9\"] " because the population standard deviation is [SClMtl V Question 21 Problem 3- Part b State the null and alternative hypotheses for this test Edit VlEW lnso't Format Tools Table lzv Paragrao'ix/ B I U av iv 72v 00v [4v av lav L, 9v :V E:\\/ 10 av V; {3; p (D Owords > K Question 22 Problem 4- Part c What is the value of the test stadstic? (round to 2 decimal places as needed)