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. The accompanying data file shows the results. Click here for the Excel Data File Assume that 1 is the mean longevity for Brand A and μ2 is the mean longevity for Brand B. a. Specify the competing hypotheses to test whether the average length of life differs between the two brands. Ho H1-H2 = 0; versus HA: H1-H2 # 0 b-1. Calculate the value of the test statistic. Assume that oд2 = 4.6 and op² = 6.5. Note: Negative value should be indicated by a minus sign. Round final answer to 4 decimal places. Test statistic

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. The accompanying data file shows the results. Click here for the Excel Data File Assume that 1 is the mean longevity for Brand A and μ2 is the mean longevity for Brand B. a. Specify the competing hypotheses to test whether the average length of life differs between the two brands. Ho H1-H2 = 0; versus HA: H1-H2 # 0 b-1. Calculate the value of the test statistic. Assume that oд2 = 4.6 and op² = 6.5. Note: Negative value should be indicated by a minus sign. Round final answer to 4 decimal places. Test statistic

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

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