Exhibit 5-4
Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected.
-Refer to Exhibit 5-4. The probability that there are no females in the sample is
A)0.0778
B)0.7780
C)0.5000
D)0.3456

Question

Quizplus · Accepted Answer

The probability that a single voter is not female is 0.60 (1 - 0.40). For 5 voters, the probability that none are female is 0.60^5 = 0.07776, which rounds to 0.0778.

Exhibit 5-4 Forty Percent of All Registered Voters in a National Election