SOLUTION: Use normal approximation to estimate the probability of getting more than 54 girls in 100 births. Assume that boys and girls are equally likely.

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Question 1187845: Use normal approximation to estimate the probability of getting more than 54 girls in 100 births. Assume that boys and girls are equally likely.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
mean is np=50
variance is np(1-p)=25
sd is therefore 5, units girls
z> (54.5-50)/5, using continuity correction factor
z>0.9
That probability is 0.1841