Can you answer #\'s 41-65? d. standard deviation i th P 41. As our confidence in

Question

Can you answer #'s 41-65?

d. standard deviation i th P 41. As our confidence in an interval estimate increases, the width of the interval b. increases. c. remains the same. d. increases or decreases depending on the alpha level. 42. The width of an interval estimate can be controlled by a. changing the confidence level. b. changing the alpha level. e. changing the sample size. d. Any of the above 43. As sample size increases, confidence interval width a, increases c. remains the same. d. changes proportionally. Like estimation procedures, hypothesis testing involves the risk that the sample a. may not be representative. b. may not be biased. c. may be too large. d. may not be significant 44. 45. In terms of hypothesis testing, "significance" refers to the a. difference between an independent and dependent variable. b. difference between the sample and population values. c. difference between the two independent variables. d. difference between our observed and our predicted outcomes. 46. In hypothes is testing, the is the critical assumption, the assumption which is actually tested a. research hypothesis b. null hypothesis c. assumption of a normal sampling distribution d. assumption that the sample was randomly selected 47. Which of the following must be normally distributed in order to proceed with hypothesis testing of means and proportions? a. The sample distribution

Explanation / Answer

41

a) Decreases

Increasing the sample size decreases the width of confidence intervals because it decreases the standard error.

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