### Home > CCG > Chapter 6 > Lesson 6.2.5 > Problem6-98

6-98.

Jinning is going to flip a coin. If the result is “heads,” he wins $\4$. If the result is “tails,” he loses $\7$.

1. What is his expected value per flip?

Find the probability of each flip. Then use that to find the expected value of the flip.

$(0.5)(4)+(0.5)(-7)=-1.50$

2. If he flips the coin $8$ times, how much should he win or lose?