A process characteristic follows a normal distribution with…

A process characteristic follows a normal distribution with a mean of 25.15 and standard deviation of 0.9.  The spec limits for the characteristic are 25.00 +/- 1.5.   If a sample of 6 parts are taken from the process, what is the probability that there will be no parts out of spec in the sample?

A company manufactures stacking toy cups. An internal diamet…

A company manufactures stacking toy cups. An internal diameter is measured with a go/no-go gage which indicates if the diameter is meeting the specification.  At the end of the day, the inspector determines the percentage of the parts that failed the test.  The type of numeric data the company is using is