Author Question: The Wilcoxon signed rank test statistic is approximately normally distributed whenever the number n ... (Read 78 times)

123654777 · **on:** Jun 24, 2018

The Wilcoxon signed rank test statistic is approximately normally distributed whenever the number n of nonzero differences in the sample is larger than:

A) 10
B) 20
C) 5
D) 15

Question 2

Given a normal random variable X with mean of 70 and standard deviation of 12, the value of the standard normal random variable Z associated with X = 82 is larger than zero.

Indicate whether the statement is true or false