A heavy equipment manufacturer produces pistons with mean diameter specification of 20 cm. The quality control manager periodically takes samples to determine if the machine process is operating according to specification. The latest sample of 36 pistons revealed a mean of 20.018 cm with a standard deviation of .036 cm. Assume a normal population of diameter lengths. When testing at =.01, is the machine process meeting specification?

The observed sample mean (20.018 cm) is 3.0 standard errors above the hypothesized mean [Quality Control Process].

A. True B. False