# If a distribution of scores has a high cluster of scores on the left end of the distribution…

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1. If a distribution of scores has a high cluster of scores on the left (or low) end of the distribution and just a few on the right (or high) end of the distribution, we can say that the distribution isv Group of answer choices A. Positively skewed B. Negatively skewed C. Leptokurtic D. Platykurtic 2. What percentage of scores is within one standard deviation under and one standard deviation over the mean? Group of answer choices A. 34.1% B. 47.7% C. 68.2% D. 95.4% 3. In terms of the significance level for null hypothesis significance testing, what is the generally accepted threshold / level used by researchers? Group of answer choices A. .01 B. .05 C. .10 D. .50 4. Let’s say you see a result reported in a journal article like the following: F(3, 150) = 10.45, p Group of answer choices A. The finding will occur at random less than .1% of the time if the null hypothesis is true B. There was a non-significant difference among the groups compared C. The likelihood of Type II error being committed in this study was less than .1% D. A, B, & C E. A & C 5. Which of the following is true regarding null hypothesis significance testing? Group of answer choices A. As the sample size goes up, the critical value (for most tests) goes down. B. As the sample size goes up, the critical value (for most tests) goes up. C. The critical value is determined by the calculated value. D. The calculated value is determined by the critical value.

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