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Question
Construct a 95% confidence interval estimate for the difference between two population means based on the following information:
| Population 1 | Population 2 |
 1 = 355 | 2 = 320 |
 1 = 50 | 2 = 40 |
| n1 = 50 | n2 = 80 |
A) 25.41 
(1 - 2) 44.59
B) 35.41 (1 - 2) 40.59
C) 15.741 (1 - 2) 54.16
D) 22.13 (1 - 2) 47.87
Answer
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