According to a study, the probability that a randomly selected teenager watched a rented video at least once during a week was 0.78. What is the probability that at least 8 teenagers in a group of 10 watched a rented movie at least once last week Express your answer to the nearest hundredth. ?
A)0.62
B) 0.08
C) 0.53
D) 0.38
E) 0.92

Question

According to a study, the probability that a randomly selected teenager watched a rented video at least once during a week was 0.78. What is the probability that at least 8 teenagers in a group of 10 watched a rented movie at least once last week  Express your answer to the nearest hundredth. ?
A)0.62
B) 0.08
C) 0.53
D) 0.38
E) 0.92

Quizplus · Accepted Answer

The probability of at least 8 teenagers watching a rented movie at least once last week is the complement of the probability that 7 or fewer teenagers watched a rented movie at least once last week. The probability that 7 or fewer teenagers watched a rented movie at least once last week is the sum of the probabilities that 0, 1, 2, 3, 4, 5, 6, or 7 teenagers watched a rented movie at least once last week. The probability that 0 teenagers watched a rented movie at least once last week is (1 - 0.78)^10 = 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

According to a Study, the Probability That a Randomly Selected