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The mean number of sick days per employee taken last year by all employees of a large city was 10.6 days. A city administrator is investigating whether the mean number of sick days this year is different from the mean number of sick days last year. The administrator takes a random sample of 40 employees and finds the mean of the sample to be 12.9. A hypothesis test will be conducted as part of the investigation. Which of the following is the correct set of hypotheses?     H0:μ=10.6Ha:μ>10.6H0:μ=10.6Ha:μ>10.6 A H0:μ=10.6Ha:μ≠10.6H0:μ=10.6Ha:μ≠10.6 B H0:μ=10.6Ha:μ<10.6H0:μ=10.6Ha:μ<10.6 C H0:μ=12.9Ha:μ≠12.9H0:μ=12.9Ha:μ≠12.9 D H0:μ=12.9Ha:μ<12.9 E

The mean number of sick days per employee taken last year by all employees of a large city was 10.6 days. A city administrator is investigating whether the mean number of sick days this year is different from the mean number of sick days last year. The administrator takes a random sample of 40 employees and finds the mean of the sample to be 12.9. A hypothesis test will be conducted as part of the investigation. Which of the following is the correct set of hypotheses?     H0:μ=10.6Ha:μ>10.6H0:μ=10.6Ha:μ>10.6 A H0:μ=10.6Ha:μ≠10.6H0:μ=10.6Ha:μ≠10.6 B H0:μ=10.6Ha:μ<10.6H0:μ=10.6Ha:μ<10.6 C H0:μ=12.9Ha:μ≠12.9H0:μ=12.9Ha:μ≠12.9 D H0:μ=12.9Ha:μ<12.9 E

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The mean number of sick days per employee taken last year by all employees of a large city was 10.6 days. A city administrator is investigating whether the mean number of sick days this year is different from the mean number of sick days last year. The administrator takes a random sample of 40 employees and finds the mean of the sample to be 12.9. A hypothesis test will be conducted as part of the investigation.

Which of the following is the correct set of hypotheses?

 
 

  • H0:μ=10.6Ha:μ>10.6H0:μ=10.6Ha:μ>10.6

    A

  • H0:μ=10.6Ha:μ≠10.6H0:μ=10.6Ha:μ≠10.6

    B

  • H0:μ=10.6Ha:μ<10.6H0:μ=10.6Ha:μ<10.6

    C

  • H0:μ=12.9Ha:μ≠12.9H0:μ=12.9Ha:μ≠12.9

    D

  • H0:μ=12.9Ha:μ<12.9

    E

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