Suppose you have a weighted coin in which heads comes up with probability 3/4 and tails with probability 1/4. If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar. What is the expected win of a coin flip in dollars?

ss333 May 29, 2021

#1**+1 **

{3/4 * 2 + 1/4 * (-1) ] / 2 = .625 62.5 cents ( not positive of this answer) Anyone else? ~EP

ElectricPavlov May 29, 2021

#2**0 **

.{3/4 * 2 + 1/4 * (-1) ]/2=625

I've seen this Q answered by Chris his answer is :

{3/4 * 2 + 1/4 * (-1) ]= 1.25

ElectricPavlov
Jun 2, 2021