1. Last year, a manufacturer produced 300,000 DVD players. Of these, approximately 1% were defective. Assume that a simple random sample of n = 150 players is drawn. Use the Poisson approximation to the binomial distribution to compute the standard deviation of the number of DVD players that were defective.

1

1.5

50.2

1.2 (correct answer):tup:

2. Last year, a manufacturer produced 450,000 DVD players. Of these, approximately 4% were defective. Assume that a simple random sample of n = 170 players is drawn. Use the Poisson approximation to the binomial distribution to compute the probability that exactly fourteen of the 170 DVD players were defective.

0.0058 (correct):tup:

0.0119