An important part of the customer service responsibilities of a cable company is the speed with which service troubles can be repaired. Historically, the data show that the likelihood is .75 that troubles in a residential service can be repaired on the same day. For the first five troubles reported on a given day, what is the probability that at least three troubles will be repaired on the same day?
A) .1035
B) .3672
C) .6328
D) .8965

Question

Quizplus · Accepted Answer

P(x ≥ 3) = 1 − (P ≤ 2) = .8965

An Important Part of the Customer Service Responsibilities of a Cable