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 ˆp when

(a) The sample size is n  50?

(b) The sample size is n  80?

(c) The sample size is n  100?

(d) Compare your answers to parts (a)–

(c) and comment on the effect of sample size on the variance of the sampling distribution.