Solved: In Exercises 520, assume that the two samples are
Chapter 9, Problem 12(choose chapter or problem)
In Exercises 520, assume that the two samples are independent simple random samplesselected from normally distributed populations, and do not assume that the populationstandard 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. Flight Arrival Delays Data Set 15 in Appendix B lists arrival delay times (min) forrandomly selected flights from New York (JFK) to Los Angeles (LAX). Statistics for times aregiven below. Use a 0.05 significance level to test the claim that Flight 1 and Flight 3 have thesame mean arrival delay time.Flight 1 n = 12, x = -20.5 min, s = 12.38401 minFlight 3 n = 12, x = -15.08333 min, s = 15.62317 min
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