An auditor for a hardware store chain wished to compare the efficiency of two different auditing techniques. To do this he selected a sample of nine store accounts and applied auditing techniques A and B to each of the nine accounts selected. The number of errors found in each of techniques A and B is listed in the table below: Errors in A Errors in B 45 31 48 37 46 39 48 37 52 54 50 45 49 49 40 41 45 50 Select a 90% confidence interval for the true mean difference in the two techniques. a) [3.050, 5.838] b) [-4.183, 4.183] c) [2.584, 6.304] d) [2.195, 6.693] e) [0.261, 8.627] f) None of the above
An auditor for a hardware store chain wished to compare the efficiency of two different auditing techniques. To do this he selected a sample of nine store accounts and applied auditing techniques A and B to each of the nine accounts selected. The number of errors found in each of techniques A and B is listed in the table below: Errors in A Errors in B 45 31 48 37 46 39 48 37 52 54 50 45 49 49 40 41 45 50 Select a 90% confidence interval for the true mean difference in the two techniques. a) [3.050, 5.838] b) [-4.183, 4.183] c) [2.584, 6.304] d) [2.195, 6.693] e) [0.261, 8.627] f) None of the above
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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An auditor for a hardware store chain wished to compare the efficiency of two different auditing techniques. To do this he selected a sample of nine store accounts and applied auditing techniques A and B to each of the nine accounts selected. The number of errors found in each of techniques A and B is listed in the table below:
Select a 90% confidence interval for the true mean difference in the two techniques.
| Errors in A | Errors in B |
| 45 | 31 |
| 48 | 37 |
| 46 | 39 |
| 48 | 37 |
| 52 | 54 |
| 50 | 45 |
| 49 | 49 |
| 40 | 41 |
| 45 | 50 |
Select a 90% confidence interval for the true mean difference in the two techniques.
a) [3.050, 5.838]
b) [-4.183, 4.183]
c) [2.584, 6.304]
d) [2.195, 6.693]
e) [0.261, 8.627]
f) None of the above
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