SOLUTION: The manager of a restaurant in a commercial building has determined that the proportion of customers who drink tea is 14%. What is the probability that in the next 100 customer

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Question 919116: The manager of a restaurant in a commercial building has determined that the
proportion of customers who drink tea is 14%. What is the probability that in the next
100 customers at least 10% will be tea drinkers?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
z = (.10-.14)/sqrt(.14*.86/100) = -.04/.0347 = -1.1528
P(z > -1.1528) = .8755 0r 87.55%