If you wish to estimate the difference between two population means using two independent large samples, the 90% confidence interval estimate can be constructed using which of the following critical values?
A) 1.96
B) 2.33
C) 2.58
D) 1.645
E) 1.28

Question

Quizplus · Accepted Answer

For a 90% confidence interval, the critical value for a standard normal distribution (Z-distribution) is 1.645.

If You Wish to Estimate the Difference Between Two Population