Consider the experiment of tossing a fair coin three times and observing the number of heads that result (X = number of heads). What is the variance for this distribution?
A) 1.5
B) 1.22
C) .75
D) .87

Name: Consider the experiment of tossing a fair coin three times and observing the number of heads that result (X = number of heads). What is the variance for this distribution? A) 1.5 B) 1.22 C) .75 D) .87
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Quizplus · Accepted Answer

E[X] == 0+ (1)+ (2)+ (3)= 1.5= + + + = .75

Consider the Experiment of Tossing a Fair Coin Three Times