For a binomial process, the probability of success is 40 percent and the number of trails is 5. Find the variance.
5.0
1.2
2.0
1.1
Solution :
Given that,
p = 0.40
q = 1 - p = 1 - 0.40 = 0.60
n = 5
Using binomial distribution,
variance =
2 = n * p * q = 5 * 0.40 * 0.60
variance =
2 = 1.2
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