28. Which set of scores has the smallest standard deviation? a. 11, 17, 31, 53 b

Question

28. Which set of scores has the smallest standard deviation? a. 11, 17, 31, 53 b. )5, 11, 42, 22 c. 145, 143, 145, 147 d. 27, 105, 10, 80 29. A sample of n- 8 scores has SS- 50. If these same scores were a population, then the SS value the population would be . a. 50 b. greater than 50 c. less than 50 d. impossible to determine without additional information 30. For a population with = 80 and = 10, what is the z-score corresponding to X = 95? a. +0.25 b. +0.50 c. +0.75 d. +1.50 31, A population has -50. What value of would make X-55 a central, repres score in the population? a, =1 b, =5

Explanation / Answer

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30) Mean = 80

SD = 10

X = 95

z = ?

z = (95 - 80)/10

z = 1.5

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