Answer: A manufacturer of semiconductor devices takes a
Chapter 9, Problem 9-124(choose chapter or problem)
A manufacturer of semiconductor devices takes a random sample of size n of chips and tests them, classifying each chip as defective or nondefective. Let Xi 0 if the chip is nondefective and Xi 1 if the chip is defective. The sample fraction defective is What are the sampling distribution, the sample mean, and sample variance estimates of p when (a) The sample size is n 50? (b) The sample size is n 80? (c) The sample size is n 100? p X1 X2 p Xn n x 86 (d) Compare your answers to parts (a)(c) and comment on the effect of sample size on the variance of the sampling distribution. 9-
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