Normal_Distributions

# On 1 shape symmetric 1 2 68 95 997 rule empirical

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Unformatted text preview: tric 1. 2. “68-95-99.7 Rule” (Empirical Rule) (Empirical Empirical Rule Empirical About 68% of observations fall within one standard About deviation of the mean deviation About 95% of observations fall within two standard About deviations of the mean deviations About 99.7% of observations fall within three standard About deviations of the mean deviations Empirical Rule on the Curve Empirical N(490, 100) Empirical Rule Demonstration http://www.stat.tamu.edu/~west/applets/empiric http://www.stat.tamu.edu/~west/applets/empiric alrule.html Empirical Rule Example Empirical The scores for all high school seniors taking the The verbal section of the Scholastic Aptitude Test (SAT) in a particular year had a mean of 490 and a standard deviation of 100. The distribution of SAT scores is bell-shaped. What percentage of seniors scored between 390 and What 590 on this SAT test? 590 A rather exclusive university only admits students who rather were among the highest 16% of the scores on this test. What score would a student need on this test to be qualified for admittance to this university? qualified Empirical Rule Examp...
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