A

Consider the following discrete probability distribution.

x	24	40	41	47
P(X = x)	0.18	0.31	0.31	0.20

What is the probability that X is greater than 40?

Multiple Choice

0.49

0.31

0.51

0.82

B

Consider the following probability distribution.

xi	P(X = xi)
10	0.12
11	0.20
12	0.32
13	0.36

The expected value and standard deviation are _____ and ________, respectively.

Multiple Choice

11.92; 1.0167

11.50; 1.2910

2.98; .2584

11.92; 1.0336

C

On a particular production line, the likelihood that a light bulb is defective is 21%. Five light bulbs are randomly selected. What is the probability that at most two of the light bulbs will be defective?

Multiple Choice

0.2833

0.7167

0.2174

0.9341