According to a study by the Centers for Disease Control and Prevention, about 33% of U.S. births are Caesarean deliveries. Suppose seven expectant mothers are randomly selected. The expected number of mothers who will not have a Caesarean delivery is ________.
A) 1.24
B) 2.31
C) 3.50
D) 4.69

Question

Quizplus · Accepted Answer

The expected number of mothers who will not have a Caesarean delivery can be calculated by multiplying the probability of not having a Caesarean delivery (1 - 0.33 = 0.67) by the total number of mothers (7). So, 0.67 * 7 = 4.69.

According to a Study by the Centers for Disease Control