The inside diameter of a randomly selected piston ring is a random variable with mean value 13 om and standard deviation 0.03 cm.Suppose the distribution of the diameter is normal. (Round your answers to four decimal places.) (a) Calculate P(12.99 s P(12.99 s X s 13.01) R s 13.01) when n- 16 (b) How likely is it that the sample mean diameter exceeds 13.03 when n- 25 P(x z 13.01)-
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