12. Flight Arrival Delays Data Set 15 in Appendix B lists arrival delay times (min) for randomly selected flights from New York (JFK) to Los Angeles (LAX). Statistics for times are given below. Use a 0.05 significance level to test the claim that Flight 1 and Flight 3 have the same mean arrival delay time. Flight 1 n = 12, x = -20.5 min, s = 12.38401 min Flight 3 n = 12, x = -15.08333 min, s = 15.62317 minIn Exercises 5-20, assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Do the following: a. Test the given claim using the P-value method or critical value method. b. Construct a confidence interval suitable for testing the given claim