Chapter 6 discussed a test of a new enzyme in which a sample of 41 observations found an average yield of 125.2 with a standard deviation of 20.1. A member of the research department was unimpressed because the standard deviation of 20.1 was large relative to the difference between 125.2 and 100 (which would be the yield if the new process was ineffective). Use these data to test the null hypothesis that average yield is μ = 100.