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Unformatted text preview: range=121=11 mean=6.71 stdev=sqrt(1216.71^2)=sqrt(76)=8.71 8. Find the zscore of an exam of 76 if the mean of the entire class was 82 and the std. deviation was 4. z=(8276)/4=3/2=1.5 9. What is the probability that a student in the class of problem #8 above scored less than 76? p=0.067 10. Tom scored a 56 on a quiz where the average was 44 and the std. deviation was 12; his brother Tim scored 63 in a different class where the average was 52 and the std. deviation was 10. Who scored relatively higher? zT=(5644)/12=1 zT=(6352)10=1.1 Tim scored relatively higher...
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 Winter '10
 JhoneCaine

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