a. The yield of a chemical process. expressed in percentage of the theoretical maximum. is measured with each of two catalysts, A. B, and with no catalyst (Control: C). Five observations are made under each condition. Making the usual assumptions for an analysis of variance. test the hypothesis that there is no difference in mean yield between the three conditions. Catalyst A Catalyst B Contml c 7972 3115 74.a no.1 30.7 76.5 77.4 30.5 74.7 77.6 31.7 74.3 77.3 m 74.9 a. Suppose the Jewelry of exams has a population that is normally distributed with standard deviation of 5. You are walking down the street and sample 9 exams from this population and obtain a mean jewelry of 28.95 and a standard deviation of 6.3802. Using an alpha value of o = 0.01. is this observed mean signicantly different than an expected jewelry of 27