10896 SmartArt Paragraph Ee AaBbcoDdEe. Emphasis Heading 1 Strong 30. The bounda

Question

10896 SmartArt Paragraph Ee AaBbcoDdEe. Emphasis Heading 1 Strong 30. The boundaries of this confidence interval (55 to 61 percent) suggest that a)a majority of Americans probably favor mandatory drug testing. b) a majority of Americans definitely favor mandatory drug testing. c) is impossible to know whether a majority of Americans favor mandatory drug testing. d) all of the above are true, depending on your perspective. 31. If you select one restaurant entree from among three possibilities (steak, lobster, and prime rib) by eliminating all but one possibility, this strategy could be described as one that begins with a) ao degrees of freedom. b) one degree of freedom. c) two degrees of freedom. d) three degrees of freedom. 32. Which of the following is true about Type Il errors? a) the probability of one occurring is equal to the alpha level b) they cannot occur if the statistical test is powerful enough c) they occur when a true effect exists, but we fail to discover it in our study d) they occur when we reject the null hypothesis. when we really should not do so 33. Given a concern only that meditation improves college grade point averages, the alternative hypothesis should translate into a a) two-tailed test. b) one-tailed test with the upper tail critical c) one-tailed test with the lower tail critical d) test with the .05 level of significance 34. A property of all hypothesis tests is that a) common outcomes cause the null hypothesis to be rejected. b) tare outcomes cause the null hypothesis to be rejected. c) common outcomes occur about as often as rare outcomes. d) tare outcomes could reflect an unduly small sample size. 35. The major difference between a z ratio and a t ratio is that the trato a) teally isn't a ration b) is entirely different. c) contains extra variability in its denominator, d) contains an extra component

Explanation / Answer

30.) Answer a majority of americans probably favour mandatory drug testing.

Reason because it is only 55 to 61% confidence level so we can not say it with certainty.

31.) Answer (c) two degrees of freedom.

Reason Because n=3 (i.e 3 possibilities) so degree of freedom = n-1

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