question_answer 61)

There are 5% defective items in a large bulk if items. What is the probability that a sample of 10 items will include not more than one defective item ? 

Answer:

. Here                      Let x be the number of defective items.       has the binomial distribution with n =10,             P(x = r) = nCr qn-r pr       Required probability = P()       = P(x = 0) + P (x = 1)