Expected Value Answers

The expected value in this case means if you flip a coin twice, heads will turn up 1 time✔ after repeated trials of flipping a coin twice, the average number of times heads will turn up is 1after repeated trials of flipping a coin twice, the average number of times heads will turn up is 1/2.

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The expected value for the number of heads is 00.5✔ 11.52.

At a carnival, you spin a spinner that has four equal-sized sections, each a different color: green, yellow, red, and blue. If you land on green, you win 2 points. If you land on yellow, red, or blue, you lose 1 point. Write the expected value equation.

Suppose you spin the carnival spinner 1,000 times. How many points would you expect to win or lose?

The expected value of the number of points won on a spin is ✔ –0.25 points0 points 0.5 points1 point 1.25 points.

What is the expected value? Should you play the game? 3/13 points; yes, you should play the game0 points; yes, the game is fair and you should play✔ –3/13 points; no, you should not play the game

For what expected value is a game fair?E(X) 0

You pick a card at random from an ordinary deck of 52 cards. If the card is an ace, you get 9 points; if not, you lose 1 point. Write the equation for the expected value. E(V) = 4 52 (a) + b 52 (c) a = b = c =

⇒ 12

P(YY) =

For Derek, E(X) = .

For Mia, E(X) = .

P(GG) = ⇒ 4/9

P(GY) = ⇒ 2/9

P(YG) = ⇒ 2/9

You toss two number cubes. If a sum of 7 or 11 comes up, you get 7 points, if not you lose 2 points.The probabilities for each of the sums is:P(2) = 1/36 P(3) = 1/18 P(4) = 1/12 P(5) = 1/9 P(6) = 5/36 P(7) = 1/6 P(8) = 5/36 P(9) = 1/9 P(10) = 1/12 P(11) = 1/18 P(12) = 1/36 The probability of a sum of 7 or 11 is:

The expected value of the number of points for one roll is: