a In a shaft and beating assembly. the diameters of the bearings, X . are normally distributed with mean = 0.526 inches and standard deviation = 3.0 x 10" inches. The diameters of the shafts. l' . are also normally distributed with mean = 0.52.5 inches and standard deviation = 4.0 x 10" tactics. (I) What is the distribution of the clearance. X - i"? What is its mean and standard deviation? (b) What is the probability that a shaft will t inside a bearing? (e) What is the probability that out of ten shaft-bearing pairs. at least nine will lit prop- erly