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Refer to Exercises 3.103 and 3.106. In what interval would
Chapter 3, Problem 201SE(choose chapter or problem)
Problem 201SE
Refer to Exercises 3.103 and 3.106. In what interval would you expect the repair costs on these five machines to lie? (Use Tchebysheff’s theorem.)
Reference
3.103 A warehouse contains ten printing machines, four of which are defective. A company selects five of the machines at random, thinking all are in working condition. What is the probability that all five of the machines are nondefective?
3.106 Refer to Exercise 3.103. The company repairs the defective ones at a cost of $50 each. Find the mean and variance of the total repair cost.
Questions & Answers
QUESTION:
Problem 201SE
Refer to Exercises 3.103 and 3.106. In what interval would you expect the repair costs on these five machines to lie? (Use Tchebysheff’s theorem.)
Reference
3.103 A warehouse contains ten printing machines, four of which are defective. A company selects five of the machines at random, thinking all are in working condition. What is the probability that all five of the machines are nondefective?
3.106 Refer to Exercise 3.103. The company repairs the defective ones at a cost of $50 each. Find the mean and variance of the total repair cost.
ANSWER:
Solution:
Step 1 of 2:
From exercise 3.106. We have the mean and variance of the total repair cost is
Here we have to find in what interval would expect the repair costs of these five machines to lie.