SOLUTION: A restauranteur is serving 300 people and believes about 15% of the patrons will order the chef's fish special. How many of the fish specials should he plan on serving in order to

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Question 527599: A restauranteur is serving 300 people and believes about 15% of the patrons will order the chef's fish special. How many of the fish specials should he plan on serving in order to be pretty sure of having enough fish on hand to meet customer demand?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
n=300, p=.15, q=.85,
mu=np=300%2A.15=45
sigma=sqrt%28npq%29=sqrt%28300%2A.15%2A.85%29=6.185
45 + 12(about 2 standard deviations) = 57 fish specials. about a 95% chance of having enough fish on hand.
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Ed