A machine manufactures parts whose diameters vary according to the Normaldistribution
Chapter 0, Problem 11.24(choose chapter or problem)
A machine manufactures parts whose diameters vary according to the Normaldistribution with mean = 40.150 millimeters (mm) and standard deviation = 0.003 mm. An inspector measures a random sample of 4 parts. Theprobability that the average diameter of these 4 parts is less than 40.148 mm isabout(a) 0.092. (b) 0.251. (c) 0.908.
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