You simultaneously flip a pair of fair coins. Your friend
Chapter 3, Problem 3.51(choose chapter or problem)
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. F ind E[X ], t he expected number of dollars you receive. \tVhat is the probability t hat you do '\vorse t han average"?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer