Automobile PartsAn important manufacturing process produces

Automobile Parts:An important manufacturing process produces cylindrical component parts for the automotive industry. It is important that the process produceparts having a mean diameter of 5.0 millimeters. The engineer involved conjectures that the population mean is 5.0 millimeters. An experiment is conducted in which 100 parts produced by the process are selected randomly and the diameter measured on each. It is known that the population standard deviation is =0 .1 millimeter. The experiment indicates a sample average diameter of x =5 .027 millimeters. Does this sample information appear to support or refute the engineer’s conjecture?

Q:I am very confused that When we get P(X5.027=0.0035 How can we judge u=5 is not true?????

Solution