Author Question: The shape of the normal probability density function is a symmetric bell-shaped curve centered on ... (Read 195 times)

RYAN BANYAN · **on:** Jun 24, 2018

The shape of the normal probability density function is a symmetric bell-shaped curve centered on the:

A) variance.
B) standard deviation.
C) coefficient.
D) mean.

Question 2

Which of the following statements is true?

A) If events A and B are complements, then the intersection of A and the complement of B is the sample space.
B) If events A and B are mutually exclusive, then the intersection of A and B is the empty set.
C) If events A and B are mutually exclusive, then the union of A and B is the sample space.
D) If events A and B are mutually exclusive, then the union of A and B is the empty set.