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HOMEWORK SOLUTIONS FOR MATH 5651 HOMEWORK FOR WEEK 10 OF SPRING 2011
 

Summary: HOMEWORK SOLUTIONS FOR MATH 5651
HOMEWORK FOR WEEK 10 OF SPRING 2011
Text: de Groot and Schervish, 4th edition
Assignment: 5.3: 3,4,5; 5.4: 3,6,7,12,14; 5.5: 2,3,6; 5.6: 2,7,9,11,13
Problem 3 of 5.3
Let X be the number of red balls in the sample of 7 balls without replacement
taken from a box containing 5 red balls and 10 blue balls. Then X is hypergeomet-
rically distributed with parameters A = 5, B = 10, and n = 7, and hence
EX = 7
5
15
=
7
3
, Var(X) = 7
5
15
10
15
15 - 7

  

Source: Anderson, Greg W. - School of Mathematics, University of Minnesota

 

Collections: Mathematics