SOLUTION: A manager of a restaurant knows that about 40% of customers order at least one appetizer. What is the probability that exactly 2 of the next 5 customers order at least one appet

Algebra ->  Permutations -> SOLUTION: A manager of a restaurant knows that about 40% of customers order at least one appetizer. What is the probability that exactly 2 of the next 5 customers order at least one appet      Log On


   



Question 1075543: A manager of a restaurant knows that about 40% of
customers order at least one appetizer. What is the
probability that exactly 2 of the next 5 customers order
at least one appetizer?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
That is 10 (number of ways 2 can be taken out of 5)*(.4)^2*(.6)^3. Notice that the probabilities add to 1 and the exponents add to 5
That product is 0.3456
For 3 out of 5, it would be 10*.6^3*.4^2