In a recent survey, 80% of the community favored building a health center in their neighborhood. If 15 citizensare chosen, what is the standard deviation of the number favoring the health center?
A) 1.55
B) 2.40
C) 0.98
D) 0.55

Question

Quizplus · Accepted Answer

The standard deviation for a binomial distribution is calculated using the formula √(n * p * (1-p)), where n is the number of trials, and p is the probability of success. Here, n = 15 and p = 0.8, so the standard deviation is √(15 * 0.8 * 0.2) = 1.55.

In a Recent Survey, 80% of the Community Favored Building