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Consider the probability that exactly 58 out of 272 registered voters will not vote in the presidential election.
Choose the best description of the area under the normal curve that would be used to approximate binomial probability.

X ~ (n,p)

 

n  = 272, p = 0.2132

 

µ = n * p, µ  = 272*0.2132 = 57.99

 

σ  = sqrt(p*(1-p) * n)

 

σ  = sqrt(0.2132 *(1- 0.2132) * 272) =  6.755

 

 

The normal distribution to approximate the binomial probability is approximately distributed with a mean of 57.99 and a standard deviation of 6.755.

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