Author Question: Given that z is a standard normal random variable and that the area to the right of z is 0.1949, ... (Read 44 times)

iveyjurea · **on:** Jun 24, 2018

Given that z is a standard normal random variable and that the area to the right of z is 0.1949, then the value of z must be:
a. 0.51.
b. -0.51.
c. 0.86.
d. -0.86.

Question 2

True or False When a great many simple random samples are drawn from a population that is normally distributed, the same means will also be normally distributed only when the sample size is greater than 30.
Indicate whether the statement is true or false