11, Find the probability for the following a. Dawson\'s Repair Service orders pa

Question

11, Find the probability for the following

a. Dawson's Repair Service orders parts from an electronic company, which advertises its parts to be no more than 10% defective. What is the probability that Bill Dawson finds 11 or more parts out of a sample of 50 to be defective? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.)

b. Dawson's repair advertises its parts to be no more than 2% defective. What is the probability that Bill Dawson finds 9 or more parts out of a sample of 200 to be defective? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.

a. Dawson's Repair Service orders parts from an electronic company, which advertises its parts to be no more than 10% defective. What is the probability that Bill Dawson finds 11 or more parts out of a sample of 50 to be defective? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.)

b. Dawson's repair advertises its parts to be no more than 2% defective. What is the probability that Bill Dawson finds 9 or more parts out of a sample of 200 to be defective? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.

Explanation / Answer

a) P(x>11)

Use Excel Binomial function

1-BINOM.DIST(10,50,0.10,TRUE)

= 0.4164

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