Question

Select the correct answer.

This table lists the probabilities of the number of repairs required by a photocopy machine during one year.

Number of Repairs Probability
0 0.12
1 0.24
2 0.33
3 0.17
4 0.14

Based on the data provided, what is the expected cost of repairs over two years if each repair costs $60?

A.
$118.20

B.
$120.00

C.
$236.40

D.
$250.80

Answer 1

C. $236.40

Explanation:

The table lists the probabilities that the copy machine is going to need a repair. The highest probability is 0.33, meaning that it will require 2 repairs in one years time. So if over two years, each repair costs $60, at 2 repairs a year, that's 4 total repairs in a two year period. 4x60= 240.

Answer 2

c

Explanation:

hope this helps