Author Question: What is the lower confidence limit of the 98 confidence interval for the difference in population ... (Read 138 times)

nautica902 · **on:** Jun 24, 2018

What is the lower confidence limit of the 98 confidence interval for the difference in population proportions?

A) -0.125
B) 0.135
C) -0.147
D) 0.147

Question 2

If X is a normal random variable with mean = 4 and standard deviation = 2, and Y is a normal random variable with mean = 10 and standard deviation = 5, then the probabilities P(X < 0 ) and P(Y < 0 ) are equal.

Indicate whether the statement is true or false