If when a coin is tossed the observance of a head rewards you with a dollar and the observance of a tail costs you fifty cents, how much would you expect to gain after twenty tosses?
A)$5.00
B)$7.50
C)$10.00
D)$15.00 Expected return = 20 x [($1.00 x .5) - (.50 x .5)]
= 20 x ($.25)

Question

Quizplus · Accepted Answer

Expected return = 20 x [($1.00 x .5) - (.50 x .5)]= 20 x ($.25)= $5.00

If When a Coin Is Tossed the Observance of a Head