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posted by  Elisa on 7/24/2008 11:57:00 PM  |  status: Live  

4.4 64E solution question

Course Textbook Chapter Problem
Statistics and Probability Introduction to the Practice of Statistics (5th) by Moore, McCabe 4.4 64E
Question Details:

In Step 7 of this problem where it gives the variance of the total number of errors in an essay is: 1.29+1+(2 x .5 x 1.13578 x 1), where did the number 1.13578 come from? How is this number calculated?
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posted by "DONALD" on 7/25/2008 2:08:14 AM  |  status: Live
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Response Details:
In step -3 as we know that σx2  = 1.29
sqrt(1.29) = 1.13578
because we need the value of σx
Hope u can understand this
DONALD
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