Transportation officials tell us that 80% of drivers wear seat belts while driving. Find the probability that more than 576 drivers in a sample of 700 drivers wear seat belts.
A) 0.0594
B) 0.9406
C) 0.8
D) 0.2

Question

Quizplus · Accepted Answer

The probability of a driver wearing a seat belt is 0.8. The probability of a driver not wearing a seat belt is 0.2. The probability of more than 576 drivers in a sample of 700 drivers wearing seat belts is the same as the probability of less than 124 drivers in a sample of 700 drivers not wearing seat belts. This is because the sum of the probabilities of all possible outcomes must be 1. The probability of less than 124 drivers in a sample of 700 drivers not wearing seat belts is 0.0594.

Transportation Officials Tell Us That 80% of Drivers Wear Seat