According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a randomsample of 15 households, what is the probability that at least 13 have vcrs?
A) 0.1268
B) 0.7
C) 0.8732
D) 0.5

Question

Quizplus · Accepted Answer

This is a binomial probability problem where n = 15 (number of trials), p = 0.7 (probability of success), and we are looking for the probability of at least 13 successes (x ≥ 13). This can be calculated using the binomial probability formula or a binomial distribution table. The calculation involves finding the probability of exactly 13 households having VCRs, exactly 14 households having VCRs, and all 15 households having VCRs, and then summing these probabilities. The correct answer, after performing these calculations, is 0.1268.

According to the Federal Communications Commission, 70% of All U