# Question

Among 12 metal parts produced in a machine shop, 3 are defective. If a random sample of three of these metal parts is selected, find:

a. The probability that this sample will contain at least two defectives.

b. The probability that this sample will contain at most one defective.

a. The probability that this sample will contain at least two defectives.

b. The probability that this sample will contain at most one defective.

## Answer to relevant Questions

Suppose that you purchase (randomly select) 3 TV sets from a production run of 10 TV sets. Of the 10 TV sets, 9 are destined to last at least five years without needing a single repair. What is the probability that all three ...The demand (in number of copies per day) for a city newspaper, x, has historically been 50,000, 70,000, 90,000, 110,000, or 130,000 with the respective probabilities .1, .25, .4, .2, and .05. a. Graph the probability ...A state has averaged one small business failure per week over the past several years. Let x denote the number of small business failures in the next eight weeks. Use the Poisson distribution to find p (x ≤ 17) if the mean ...Refer to Exercise 6.11. a. Calculate the mean flight time and the standard deviation of the flight time. b. Find the probability that the flight time will be within one standard deviation of the mean. Suppose that the random variable x is normally distributed with mean m 1,000 and standard deviation s 100. Sketch and find each of the following probabilities: a. P(1,000 ≤ x ≤ 1,200) b. P(x > 1,257) c. P(x < 1,035) ...Post your question

0