Illustration 10.40. You are given the foilowing distributión of monthly income per family. Calculate the mean (X) and S.D. (S) for this distribution. What % of families fall in the interval X-S and Y-+S ? Monthly income No. of families 100- 120 30 120-160 25 160- 200 20 200-240 15 240-280 10
Illustration 10.40. You are given the foilowing distributión of monthly income per family. Calculate the mean (X) and S.D. (S) for this distribution. What % of families fall in the interval X-S and Y-+S ? Monthly income No. of families 100- 120 30 120-160 25 160- 200 20 200-240 15 240-280 10
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.2: Proportions
Problem 47WE
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