# Question: A lot of 75 washers contains 5 in which the variability

A lot of 75 washers contains 5 in which the variability in thickness around the circumference of the washer is unacceptable. A sample of 10 washers is selected at random, without replacement.

(a) What is the probability that none of the unacceptable washers is in the sample?

(b) What is the probability that at least one unacceptable washer is in the sample?

(c) What is the probability that exactly one unacceptable washer is in the sample?

(d) What is the mean number of unacceptable washers in the sample?

(a) What is the probability that none of the unacceptable washers is in the sample?

(b) What is the probability that at least one unacceptable washer is in the sample?

(c) What is the probability that exactly one unacceptable washer is in the sample?

(d) What is the mean number of unacceptable washers in the sample?

**View Solution:**## Answer to relevant Questions

A company employs 800 men under the age of 55. Suppose that 30% carry a marker on the male chromosome that indicates an increased risk for high blood pressure. (a) If 10 men in the company are tested for the marker in this ...Use the binomial approximation to the hypergeometric distribution to approximate the probabilities in Exercise 3-92. What is the finite population correction in this exercise?The number of cracks in a section of interstate highway that are significant enough to require repair is assumed to follow a Poisson distribution with a mean of two cracks per mile. (a) What is the probability that there ...The number of messages sent to a computer bulletin board is a Poisson random variable with a mean of 5 messages per hour. (a) What is the probability that 5 messages are received in 1 hour? (b) What is the probability that ...Messages that arrive at a service center for an information systems manufacturer have been classified on the basis of the number of keywords (used to help route messages) and the type of message, either email or voice. Also, ...Post your question