Coin Toss Mean Variance (Jee Mains) | ExamDuo
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Random Variables and Distributions
Medium
Coin Toss Mean Variance
A coin is tossed three times. Let X denote the number of times a tail follows a head. If μ and σ
2
denote the mean and variance of X, then the value of 64(μ + σ
2
) is :
SELECT ONE OPTION
A
51
B
48
C
32
D
64
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