A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He collects data(measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. A portion of the data isshown in the accompanying table. (You may find it useful to reference the appropriate table: z table or (table)Brand A Brand B1724d141618119Click here for the Excel Data FileAssume that is the mean longevity for Brand A and u₂ is the mean longevity for Brand B.a. Select the competing hypotheses to test whether the average length of life differs between the two brands.He: H1-42 = 0; HA: 11-12 0He: H1 - H2 = 0; HA: 41 - 4₂ <0He: 1-20; HA: H1 - H2 > 0Test statisticb-1. Calculate the value of the test statistic. Assume that o42 4.9 and og2-5.3. (Negative value should be indicated by a minus sign.Round final answer to 2 decimal places.) A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He collects data(measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. A portion of the data isshown in the accompanying table. (You may find it useful to reference the appropriate table: z table or (table)Brand A Brand B1724d141618119Click here for the Excel Data FileAssume that is the mean longevity for Brand A and u₂ is the mean longevity for Brand B.a. Select the competing hypotheses to test whether the average length of life differs between the two brands.He: H1-42 = 0; HA: 11-12 0He: H1 - H2 = 0; HA: 41 - 4₂ <0He: 1-20; HA: H1 - H2 > 0Test statisticb-1. Calculate the value of the test statistic. Assume that o42 4.9 and og2-5.3. (Negative value should be indicated by a minus sign.Round final answer to 2 decimal places.)

From the information, given thatLet µ1 denotes the mean longetivity for Brand ALet µ2 denotes the…

Answered: A consumer advocate researches the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Transcribed Image Text:A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He collects data (measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. A portion of the data is shown in the accompanying table. (You may find it useful to reference the appropriate table: z table or (table) Brand A Brand B 17 24 d 14 16 18 1 19 Click here for the Excel Data File Assume that is the mean longevity for Brand A and u₂ is the mean longevity for Brand B. a. Select the competing hypotheses to test whether the average length of life differs between the two brands. He: H1-42 = 0; HA: 11-12 0 He: H1 - H2 = 0; HA: 41 - 4₂ <0 He: 1-20; HA: H1 - H2 > 0 Test statistic b-1. Calculate the value of the test statistic. Assume that o42 4.9 and og2-5.3. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.)