Homework Help: Prob. Math

Posted by Traci on Thursday, April 7, 2011 at 1:34am.

Sarah draws a card from a deck of 52 cards. She receives 40 cents for a heart, 50 cents for an ace, and 90 cents for the ace of hearts. The cost of a draw is 15 cents. How much will Sarah lose if she plays this game?

Prob. Math - Reiny, Thursday, April 7, 2011 at 8:31am
She wins if

1. she draws a heart, but not the ace of heart (40 cents)
Prob = 12/52
2. she draws an ace , but not the ace of heart (50 cents)
prob = 3/52
3. she draws the ace of hearts ( 90 cents)
prob = 1/52

expected return
= (12/52)(40) + (3/52)(50) + (1/52)(90)
= 13.8 cents

so if she pays 15 cents to play the game ........

Answer this Question

Related Questions

Algebra 2 Expected values - Sarah draws cards from a deck of 52 cards. She ...
math - Michelle draws a card from a standard deck of 52 cards. She replaces the ...
math - Michelle draws a card from a standard deck of 52 cards. She replaces the ...
Stats - Directions: Suppose you have a standard deck 52 cards (4 suits: hearts...
Probability - At a fair run by a local charity organization, it costs 50 cents ...
Please Help - PROBABILITY - At a fair run by a local charity organization, it ...
Math - At a fair run by a local charity organization, it costs 50 cents to try ...
College Math - A card is selected from a standard deck of 52 playing cards. A ...
8th Grade Algebra - If Julie draws a card from a standard deck of well-shuffled ...
Math - At a fair run by a local charity organization, it costs 50 cents to try ...

For Further Reading

First Name:
School Subject:
Answer: