c) sensitivity to extreme observations d) use of information fromonly two observ

Question

c) sensitivity to extreme observations d) use of information fromonly two observations 19. Compared to the standard deviation for the distribution of SAT I scores for college students, the standard deviation for the distribution of SAT I scores for high school students should be a) smaller b) the same. c) larger. d) different Ch. 5: 20. The theoretical normal curve a) ignores irregularities c) defines those observations or behaviors that are normal b) describes any observed frequency distribution d) all of the above 21. On a reading comprehension test, it woukd be preferable to achieve a z score of a) 2.34 b)-350 c)0.00 d) 1.00 22. The standard normal curve a) appears in infinitely many different forms. b) has a mean of 100 and a standard deviation of 10 c) is unrelated to any other normal curve. d) is the single normal curve for whichtablesare available 23. For any z score, the corresponding proportions in columns B and C always sum to a) 1.0000 b)0.5000 c) 0.0000 d) the value of z. 24. In many statistical applications, we wish to distinguish between events a) true and false c) controlled and uncontrolled b) real and imaginary d) common and rare Ch. 6: 25 Scatternlots tu

Explanation / Answer

20.) d) all of the above.

21) a) z-score is the number of standard deviations above (positive z) or below (negative z) the mean.

z = (X - ) / , where X = score, = mean, = standard deviation.

You want a score that results in the largest positive z value, i.e., 2.34.

22) appears in infinitely many different forms

23) data not available(column B and C)

24) a) true and false

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