Throw two dice. If the sum of the two dice is 55 or more, you win $30. If not, you pay me $161.
Step 1 of 2:
Find the expected value of the proposition. Round your answer to two decimal places. Losses must be expressed as negative values.
Step 2 of 2:
If you played this game 794794 times how much would you expect to win or lose? Round your answer to two decimal places. Losses must be entered as negative.
If two dice are thrown the maximum possible sum of the number on both the dice is 12 that is when both the dice comes up with a six on the upper face.
So,
let X: Sum of the two dice
P(X>=55)=0
(As the sum ie X would take a maximum value as 12)
P(X<55)=1
Step 1
Therefore expected value of proposition is:-
=0*30+1*(-161)
= -161$
Hence if he plays it would be a loss of 161$.
Step 2
If the game is played 794794 times
let N:Number of times the game is played.
So expected loss= N*(loss per throw)
= 794794*(-161)
= -127961834
Therefore is 794794 games are played he would be having a loss of 127961834$.
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