SOLUTION: Please help me answer his question Three out of four American adults under age 35 have eaten pizza for breakfast. If a random sample of 10 adults under age 35 is selected, find

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Question 977476: Please help me answer his question
Three out of four American adults under age 35 have eaten pizza for breakfast. If a random sample of 10 adults under age 35 is selected, find the probability that exactly 7 have eaten pizza for breakfast.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!

You need the binomial probability formula for the probability of successes out of trials where the probablity of success on any individual trial is



Where is the number of combinations of things taken at a time and is calculated by

For your problem, , , and . Just do the arithmetic.

Or, if you have Excel on your PC or Numbers on your Mac, open a blank spread sheet and type in:



Then hit Enter (or Return I think it is on the Mac)

John

My calculator said it, I believe it, that settles it