SOLUTION: 22.) One out of four Americans over age 55 has eaten pizza for breakfast. If a sample of 10 Americans over age 55 is selected at random, find the probability that at most 3 have ea

Question 185796This question is from textbook Elementary Statistics
: 22.) One out of four Americans over age 55 has eaten pizza for breakfast. If a sample of 10 Americans over age 55 is selected at random, find the probability that at most 3 have eaten pizza for breakfast.
Thanks! This question is from textbook Elementary Statistics

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
One out of four Americans over age 55 has eaten pizza for breakfast. If a sample of 10 Americans over age 55 is selected at random, find the probability that at most 3 have eaten pizza for breakfast.
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It's binomial because each person either has or has not eaten pizza.
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n = 10 ; p = 1/4 ; 0<=x<=3
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On a TI-83 use binomcdf(10,0.25,3) to get 0.7759
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Cheers,
Stan H.
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