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

Question

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

Quizplus · Accepted Answer

The Answer of 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

In Order to Construct a 95% Confidence Interval Estimate for the Difference