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Math · Statistics And Probability
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for each of the following pairs of distribution first decide whether they are standard deviations are about the same or different if the standard deviations are different indicate which distribution should have the larger standard deviation hint the deviations with the more dissimilar sets of scores or individuals should produce the larger standard deviation regardless of whether an average score or individual in one distribution differ from those in the other distribution

4.9 Bach of the following pairs at dstributions, first decide whether the standard deviations are about the same or different, Ir their standard devi- ations are different, indicate which distribution should have the larger standard deviation. Hint The distribution with the more dissimilar set of scores or individuals should produce the larger standard deviation regard- less of whether, an average, scores orindividuals in one from those in the other distribution (aN scores for all graduatng high school seniors (asl or al college tresh- men (b) Ages of patients in a community hospital bil or a childrens hospital (b (cl Motor skill reaction times of professional baseball players fcJor colege students (d) GPAs of students at some university as revealed by a random sample (d,J or a Densus of the entire student body (d) e) Anxiety scores on a scale from 0 to 50) of a random sample of colege students taken from the senior class hose who attend an anxiety reduction clinic le) If Annual incomes ot recent college graduates or of 20-year alumni (t) Answers on page 503 4,10 When not interrupted artificially, the durabon ot human pregnancies can


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