Unformatted text preview: You will find .8 and .04, respectively. Add them to get 0.84 as the Z value. So, at Z=0.84, 30% of the area under the curve is contained b/w the mean and 0.84. With that knowledge, plug 0.84 as Z in the Z equation, use 77 as the mean, and use 20 as the standard deviation. Then solve for X. Dr. J. 20% Total is 80% 6-20-c In 5 th edition of Anderson/Sweeney/ Williams 0.5 0.3...
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- Spring '08
- Standard Deviation, Mean, left margin