Multiple Choice
In order to construct a 95% confidence interval estimate for the difference between the means of two normally distributed populations, where the unknown population variances are assumed not to be equal, the following summary statistics were computed from two independent samples: ,
,
,
,
, and
. In this case, what is the upper confidence limit?
A) 6.78
B) 18.78
C) 77.3
D) 89.3
Correct Answer:

Verified
Correct Answer:
Verified
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