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Instructions and solutions for statistics homework, section 2, including calculating percentiles and drawing a density curve using excel. Problem 1.80 involves finding the mean and standard deviation, and drawing the density curve for a normal distribution of weights for distance runners with given values. Problem 1.94 asks to use excel to find the percentage above a certain value. The document also includes some intermediate calculations.
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Statistics – OR 155, Section 2, Homework # 3 Due: Thursday, February 1, 2007 1.80 (a: l = w = 1 b: 0.25 c: 0.5), 1.81, 1.
1.97 (Hint: the % above 130 = 100% - % below 130) 1.99 (see discussion above)
1.95, 1.101, 1.107, 1. 1.116 a (-0.674, 0.674)
1.118 (0.7%)