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Question
The following paired samples have been obtained from normally distributed populations. Construct a 90% confidence interval estimate for the mean paired difference between the two population means.
| Sample # | Population 1 | Population 2 |
| 1 | 3,693 | 4,635 |
| 2 | 3,679 | 4,262 |
| 3 | 3,921 | 4,293 |
| 4 | 4,106 | 4,197 |
| 5 | 3,808 | 4,536 |
| 6 | 4,394 | 4,494 |
| 7 | 3,878 | 4,094 |
A) -571.92 ≤ μ ≤ -172.51
B) -487.41 ≤ μ ≤ -283.89
C) -812.21 ≤ μ ≤ -72.61
D) -674.41 ≤ μ ≤ -191.87
Answer
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