Question

You simultaneously flip a pair of fair coins. Your friend gives you one dollar if both coins come up heads. You repeat this ten times and your friend gives you X dollars. Find E[X], the expected number of dollars you receive. What is the probability that you do "worse than average"?

Answer 1

Answer:

E(X) = $2.5

P(Worst than Average) = 0.072

Step-by-step explanation:

I have solved this problem on paper. (Attached)