Friday

January 30, 2015

January 30, 2015

Posted by **osman** on Friday, March 1, 2013 at 8:14am.

been used. Four of the balls are randomly chosen from the box. Let be the

number of new balls among the selected ones.

(a) Find the probability distribution of :

(b) Evaluate the expectation E:

(c) Evaluate the variance V ar

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