Data Set 15 in Appendix B lists arrival delay times (min) for randomly selected flights from New
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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.
![Data Set 15 in Appendix B lists arrival delay times](https://dsd5zvtm8ll6.cloudfront.net/si.question.images/image/images7/450-M-S-S-I(708).png)
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.
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