(Write your answer choices in the space provided) Questions 1-4 pertain to the f
ID: 3237999 • Letter: #
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(Write your answer choices in the space provided) Questions 1-4 pertain to the following scenario. A researcher wants to know whether people are more likely to make a charitable donation after being complimented on their appearance. The researcher takes a sample of 50 first-year college students and divides them into two groups: one group receives a compliment about their appearance from a confederate (an actor) and one group does not. The participants are then approached by another confederate who solicits them for a donation to the American Red Cross. The researches then notes whether or not the participant, agrees to make a donation. 1. The dependent variable in this study would be a. whether or not a charitable donation is made b. whether or not the participant is complimented c. the first-year college students d. the confederate 2. The scale of measurement of this dependent variable is a. nominal b. ordinal c. interval d. ratio 3. This hypothesis test is: a. one-tailed b. two-tailed 4. The proper test statistic for measuring this relationship would be the: a. t-statistic b. f-ratio c. Pearson r d chi-square 5. What is the median of the following set of scores: 12, 4, 7, 9, 1, 3, 9, 15. a. 7 b. 7.5 c. 8 d. 9 6. If alpha is held constant at .05, what is the relationship between sample size region, and the risk of a Type I error? a. As sample size increases, the critical region expands and the risk of a Type I error increases. b. As sample size increases, the critical region shrinks and the risk of a Type I error increases. the critical region expands and the risk of a Type I errorExplanation / Answer
Q1. Ans: a) whether or not a charitable donation is made.
Q 2. Ans: a) Nominal.
Q 3. Ans: b) two tailed.
Q 4. Ans: a) t- statistic (two samples t-test)
Q5. Ans: Ascending order of data: 1,3,4,7,9,9,12,15.
Median= (7+9)/2= 8
Ans: c) 8.
Q 6. Ans: b.
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