Nan Compos Mentis, a technical consultant, claims that she can increase average hourly productivity for the fabricators at Stryker Manufacturing by more than 10 units per worker. To support her claim, Nan plans to select a sample of workers, provide the workers in the sample with special training, and then use results from the sample in a hypothesis test designed to establish whether the training has had the desired effect. What null and alternative hypotheses would you recommend here?
Answer to relevant QuestionsIn past years the average number of errors in reports issued by the accounting section of Sterling Thompson, Inc. has been 5.2. The company now has a new reporting system in place. In a random sample of 36 recent reports ...The competing hypotheses for a particular hypothesis test are as follows: H0: μ > 2500 seconds Ha: μ < 2500 seconds Assume the population standard deviation is known to be 140 seconds and that you intend to take a random ...The competing hypotheses for a hypothesis test are as follows: H0: μ < 1000 Ha: μ > 1000 Assume the population standard deviation is known to be 80. A random sample of size 64 has a sample mean of 1020. a. Calculate the p ...The fundamental hypothesis test in the American judicial system involves the following hypotheses: H0 : The accused is innocent. Ha: The accused is guilty. a. Describe what a Type I error would be here. b. Describe what a ...Suppose you are testing the following hypotheses: H0: μ = 60 Ha: μ ≠ 60 Sample size is 49. The sample mean is 68. The population standard deviation is 21. The significance level is .05. a. Compute the p value for the ...
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