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How to find the variance of 36 percent of voters favor a given ballot for groups of 30 voters find the variance for the nunmber who favor the measure?
Wiki User
∙ 9y ago
If you assume a binomial distribution, the variance is n*p*(1-p) where
n is the number of voters = 30
p is the probability of support = 0.36
So variance = 30*0.36*0.64 = 6.912
Wiki User
∙ 9y ago
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