g Two balls are dropped in such a way that each ball is equally likely to fall into any one of four holes. Both balls may fall into the same hole. Let X denote the number of unoccupied holes at the end of the experiment. What is Var X  ?

Question

Darius Mercer

25 June, 06:42

+1

Answers (1)

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Nash Gallegos · Answer 1

0.5

Step-by-step explanation:

X=[3,2]

mean = 5/2

(X-μ) ² = [0.25, 0.25]

Var X = Σ (X-μ) ² / (n-1)

Var X = (0.25+0.25) / (2-1)

Var X = 0.5