Question
Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20.
Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following
b). Relative frequency of scores less than 120 A. 76.1% B. 80.1% C. 84.1% D. 88.1%
Relative frequency of scores less than 60 A. 1.28% B. 2.28% C. 3.28% D. 4.28%
A. 1.28% B. 2.28% C. 3.28% D. 4.28%
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Making Hard Decisions with decision tools
Authors: Robert Clemen, Terence Reilly
3rd edition
538797576, 978-0538797573
