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1. It is known from past experience, that 10%(0.10) of the items produced by a machine...

1. It is known from past experience, that 10%(0.10) of the items produced by a machine are defective. In a new study, a random sample of 75 items will be selected and checked for defects.

A. What is the Mean (expected value), Standard Deviation, and Shape of the sampling distribution of the sample proportion for this study?

B. What is the probability that the sample proportion of defects is more than 13%(0.13)?

C. What is the probability that the sample proportion of defects is less than 5%(0.05)?

Math   Statistics-And-Probability   
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