Author Question: The probability density function for an exponential random variable x has a graph called a bell ... (Read 148 times)

sammy · **on:** Jun 24, 2018

The probability density function for an exponential random variable x has a graph called a bell curve.

A) True B) False

Question 2

Suppose a man has ordered twelve 1-gallon paint cans of a particular color (lilac) from the local paint store in order to paint his mother's house. Unknown to the man, three of these cans contains an incorrect mix of paint. For this weekend's big project, the man randomly selects four of these 1-gallon cans to paint his mother's living room. Let x = the number of the paint cans selected that are defective. Unknown to the man, x follows a hypergeometric distribution. Find the standard deviation of this distribution.

A) 1 B) 0.545 C) 0.739 D) 0.297