Question 294602: suppose 1000 coins are tossed. find the probability of getting the following result.
exactly 505 heads or more?
use the normal curve approximation to the binomial distribution (round to 4 decimal places
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! suppose 1000 coins are tossed. find the probability of getting the following result.
exactly 505 heads or more?
use the normal curve approximation to the binomial distribution (round to 4 decimal places
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mean = (1/2)1000 = 500
std = sqrt(1/2*500) = sqrt(250) = 15.81
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P(504.5 < x < 505.5) = normalcdf(504.5,505.5,500,sqrt(250)) = 0.0240
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Cheers,
Stan H.
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