# hw10sol - Solutions to Homework 10 Problem 9.1 a The...

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Solutions to Homework 10 Problem 9.1 a. The hypotheses are H 0 : μ 600 H a : μ > 600 The alternative hypothesis should correspond to the claim that the bills have been increasing ( μ > 600). b. If H 0 cannot be rejected then we would conclude that it is possible the average guest bills have not been increasing. c. If H 0 is rejected then we would conclude that the average guest bills have been increas- ing Problem 9.3 a. The hypotheses are H 0 : μ = 32 H a : μ 6 = 32 b. If H 0 cannot be rejected, then it is possible that the production line is ﬁlling cartons correctly. There is no evidence that the production line is not operating properly. Allow the production process to continue. c. If H 0 can be rejected, then we conclude that the production line should be shut down (i.e. the underﬁlling or overﬁlling is occurring). Problem 9.7 a. The hypotheses are: H 0 : μ 8000 H a : μ > 8000 b. A Type I error is when H 0 is true but we reject H 0 in our hypotheses test. In this case, in reality the compensation plan is not increasing the average sales, but the hypothesis

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## This note was uploaded on 01/24/2011 for the course STATISTICS 19897 taught by Professor Jager,abigaill during the Spring '10 term at Kansas State University.

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hw10sol - Solutions to Homework 10 Problem 9.1 a The...

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