2.9 Do Now (Simple Expected Value)
Quiz by Fred Spies
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The diagram below is that of a table that can be used to calculate the expected value of a wager wherein $5 is gained from a BlackJack result when two cards are dealt from an ordinary deck of 52 cards and $5 are lost otherwise.
Explain the probability of 0.952 that appears in the given table.
29The complement to the probability of "obtaining 21"
The probability of winning
The probability of obtaining 21
- Q1
The diagram below is that of a table that can be used to calculate the expected value of a wager wherein $5 is gained from a BlackJack result when two cards are dealt from an ordinary deck of 52 cards and $5 are lost otherwise.
Explain the probability of 0.952 that appears in the given table.
The complement to the probability of "obtaining 21"
The probability of winning
The probability of obtaining 21
300s - Q2
The diagram below is that of a table that can be used to calculate the expected value of a wager wherein Pearl wins $5 from a BlackJack result (21) when two cards are dealt from an ordinary deck of 52 cards and $5 are lost otherwise.
Given the expected value stated in the table below; is betting money in Pearl's blackjack game a good idea?
No, expected value is negative (average result is a loss)
Pearl will always lose, because the expected value is negative
Pearl
300s - Q3
Wren invented a game. Wren claims it's easy to win, but Winner is suspicious. Help Winner determine if his suspicions are correct, by calculating the expected value of this game.
-$189.80
-$9.8
$189.80
$9.8
300s - Q4
Sarah will give you 100 Baht if you draw a "Diamonds" card from a standard deck of cards. But only if you agree to give her 50 Baht if you don't draw a "Diamonds card". Does that seem fair to you?
No
Yes
300s - Q5
In a game, you flip a coin twice and record the number of heads that occur. You get 10 points for 2 heads, zero points for 1 head, and 5 points for no heads. What is the expected value for the number of points you'll win per turn?
3.75
4.25
-3.75
Not applicable
300s
