Question

In: Statistics and Probability

A manager of an industrial plant asserts that workers on average do not complete a job...

  1. A manager of an industrial plant asserts that workers on average do not complete a job using Method A in the same amount of time as they would using Method B. Seven workers are randomly selected. Each worker’s completion time (in minutes) is recorded by the use of Method A and Method B.
  1. Specify the null and alternate hypotheses to test the manager’s assertion.
  2. At the 10% significance level, specify the critical value(s) and decision rule.
  3. Assuming the completion time difference is normally distributed, calculate the value of the test statistic.
  4. Is the manager’s assertion supported by the data?

Worker

Method A

Method B

1

15

16

2

21

25

3

16

18

4

18

22

5

19

23

6

22

20

7

20

20

Solutions

Expert Solution


orchestra answered 2 years ago
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