Round your answer to four decimal placesSolutionSo the proba

Round your answer to four decimal places

Solution

So the probability that based on a sample of 100 DVDs the process will be stopped to readjust the machine is

P(phat>0.09) = P((phat-p)/sqrt(p*(1-p)/n) >(0.09-0.06)/sqrt(0.06*(1-0.06)/100))

=P(Z>1.26)

=0.1038 (from standard normal table)