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14. a. Probability of making a Type I error b. Probability of making a Type Il error c. Probability of rejecting Ho when you are supposed to d. Probability of not rejecting Ho when you shouldnt. Which of the following probabilities is equal to the significance level a? 15. If we reject the null hypothesis when it is false, then we have committed a. a Type ll error b. a Type l error both a Type I error and a Type Il error neither a Type l error nor a Type Il error c. d. Researchers claim that 40 tissues is the average number of tissues a person uses during the course of a cold. The company who makes Puffs brand tissues thinks that fewer of their tissues are needed. What are their nul and alternative hypotheses? a. Ho: μ-40 vs. H1 : μ > 40 b. Ho: H40 vs. H: H< 40 Ho:40 vs. Hi:4 < 40 d. Ho: μ < 40 vs. H1: μ-40 17. The owner of a local Jazz Club has recently surveyed a random sample of n-200 customers of the club She would now like to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are a. Ho: 30 vs. H1: < 30. b. Ho: -30 vs. H!: > 30. Ho: 30 vs. Hi:4 < 30. d. Ho:2 -30 vs. H:> 30. 18. a. b. C. d. In order to determine the p-value, which of the following is not needed? The level of significance Whether the test is one-tail or two-tail The value of the test statistic. All of these choices are true19. Which of the following p-values will lead us to reject the null hypothesis if the level of significance equals 0.05? a. 0.150 b. 0.100 c. 0.051 d. 0.025

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math   Statistics-And-Probability   
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