Assume that you need to select a mail delivery service provider for your company's daily mails....

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Assume that you need to select a mail delivery service provider for your company's daily mails. There are two candidates for you to choose from, carrier UPX and INTEX. In testing the delivery times of these two carriers, you send two same packages to randomly selected district offices of your company, with one package through UPX and the other one via INTEX. The recorded delivery times measured in hours are listed in the following table. Based on the sample data, please use a formal hypothesis test to help your company select one mail delivery service provider (use a-0.05 significance level for the test). Note: Use paired sample t test for this case (not two-sample t test in which case you will have different results for business decision making). District Office Seattle Los Angeles Boston Cleveland N.Y.C. Houston Atlanta St. Louis Milwaukee Denver Delivery Time (Hours) INTEX UPX 32 3 19 16 15 18 4 07 16 42453 00 30 14 10 15 15 13 15 15 8 9 11 Assume that you need to select a mail delivery service provider for your company's daily mails. There are two candidates for you to choose from, carrier UPX and INTEX. In testing the delivery times of these two carriers, you send two same packages to randomly selected district offices of your company, with one package through UPX and the other one via INTEX. The recorded delivery times measured in hours are listed in the following table. Based on the sample data, please use a formal hypothesis test to help your company select one mail delivery service provider (use a-0.05 significance level for the test). Note: Use paired sample t test for this case (not two-sample t test in which case you will have different results for business decision making). District Office Seattle Los Angeles Boston Cleveland N.Y.C. Houston Atlanta St. Louis Milwaukee Denver Delivery Time (Hours) INTEX UPX 32 3 19 16 15 18 4 07 16 42453 00 30 14 10 15 15 13 15 15 8 9 11

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To test the hypothesis is that there is a difference in the average delivery time for UPX and INTEX ... View the full answer