Question

Select the correct answer.
The table gives the probability distribution of the number of DVDs sold per day at a music store. What is the probability of 5 or more DVDs being sold on any given day?


number of DVDs sold in a day

0-4

5-9

10-14

15-20

probability

0.1875

?

0.4375

0.125

A.
0.4375

B.
0.2525

C.
0.8125

D.
1.0000

Answer 1

First find the missing probability: 1 − (0.1875 + 0.4375 + 0.125) = 1 − 0.75 = 0.25 for 5–9.

Probability of 5 or more = 0.25 + 0.4375 + 0.125 = 0.8125.

Answer: C.