Answer Happy

17. An auto manufacturer produces cars which are sold globally. The company is aware that in 6% of the cars manufactured, the air bags are defective, so the car must be returned to the manufacturer. In a sample of 50 cars picked at random: What is the probability of exactly 3 cars having defective air bags? a. b. What is the probability of exactly 10 cars having defective air bags? c. What is the variance of the binomial random variable? d. What is the standard deviation of the binomial random variable?

Assuming z=-2.25, use the following normal distribution graph to answer part A and B. Z a. Pr(z+2.25) b. Pr (2>-2.25)