Suppose that in Example 11.1 we wanted to determine whether there was sufficient evidence to conclude that the new system would not be cost-effective. Set up the null and alternative hypotheses and discuss the consequences of Type I and Type II errors. Conduct the test. Is your conclusion the same as the one reached in Example 11.1? Explain.
Answer to relevant QuestionsThe feasibility of constructing a profitable electricity-producing windmill depends on the mean velocity of the wind. For a certain type of windmill, the mean would have to exceed 20 miles per hour to warrant its ...a. Test these hypotheses by calculating the p-value given that x̄ = 99, n = 100, and σ = 8H0: μ = 100H1: μ ≠ 100b. Repeat part (a) with n = 50.c. Repeat part (a) with n = 20.d. What is the effect on the value of the ...For the SSA example, create a table that shows the effect on the test statistic and the p-value of decreasing the value of the sample mean. Use x̄ = 22.0, 21.8, 21.6, 21.4, 21.2, 21.0, 20.8, 20.6, and 20.4.The owner of a public golf course is concerned about slow play, which clogs the course and results in selling fewer rounds. She believes the problem lies in the amount of time taken to sink putts on the green. To investigate ...An automotive expert claims that the large number of self-serve gasoline stations has resulted in poor automobile maintenance, and that the average tire pressure is more than 4 pounds per square inch (psi) below its ...
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