# Answer to Question #65547 in Electrical Engineering for lilonas

Question #65547

A bowl contains 10 Red balls and B blue balls. 5 balls are selected at random

(without replacement). Let X be the number of blue balls selected. Find the

average value of X. Find the Variance of X. Now assume you select 5 balls with

replacement (i.e. you pick up a ball, note its color, and then put it back again). Find

E(X) and VAR (X) for this case.

(without replacement). Let X be the number of blue balls selected. Find the

average value of X. Find the Variance of X. Now assume you select 5 balls with

replacement (i.e. you pick up a ball, note its color, and then put it back again). Find

E(X) and VAR (X) for this case.

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