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"?
1 answer:
You might be interested in
Let the number be X, then we find
Answer: OPTION A
Step-by-step explanation:
It is important to remember the "Angle Addition Postulate" in order to solve this exercise.
You have this larger angle:
According to the "Angle Addition Postulate", if the point "C" is in the interior of , then the measure of this angle can be obtained by adding the angle
and the angle
.
You can observe in the figure that:
Then you get that:
Therefore, the correct answer is Option A.