Author Question: Given a normal random variable x with mean of 82 and standard deviation of 12, the value of the ... (Read 88 times)

dejastew · **on:** Jul 24, 2018

Given a normal random variable x with mean of 82 and standard deviation of 12, the value of the standard normal random variable z associated with x = 70 is smaller than zero.
Indicate whether the statement is true or false

Question 2

If you wish to construct 85 upper confidence bound (UCB) for the population proportion p, then the z-value you should use is approximately:
a. 2.58
b. 2.33
c. 1.96
d. 1.65
e. 1.04