In order to check on the manufacturing process, random samples of several glass sheets are taken repeatedly. According to the Central Limit Theorem, if a random sample of size n is drawn 'om a population with mean u and variance 0'2, the sample mean has approximawa a normal distribution with mean u and variance 0'2. The larger the sample size n, the better the approximation. Assume h=0.5 and use either the Excel NORMDIST function or the worksheet Normal Probabilities to answer the following questions: (a) What is the probability that the average number of aws in a random sample of 10 glass sheets does not exceed 0.30? (b) What is the probability that the average number of aws in a random sample of 30 glass sheets does not exceed 0.30