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A coin is tossed twice If heads comes up either time you get 2 dollars If heads does not come up you lose 4 dollars What is the expected value of this game?
There is a .25 chance that no heads will come up. (1/2*1/2=.25) Therefore, there is a .75 chance that one or more heads will come up. Value of game = .75*$2-.25*$4=$1.5-$1=$.50 Over time, you should come out ahead.
A coin is tossed twice if heads comes up either time you get 2 if heads does not come up you lose 4?
This is a good bet to take. Your expected payout is 0.5 each round of the 2 tosses. The possible outcomes from 2 tosses: HT, HH, TT, TH. The probability that heads comes up is 3 in 4 (.75). The probability that heads does not come up is 1 in 4 (.25). Your expected payout is: (2 * .75) + (-4 * .25) = 1.5 - 1 = 0.5
How do you convert 2.25 into a fraction?
Divide 2 by .25 and .25 by 2, add both up together and divide by 100
How do you write a fraction as a decimal with a whole number?
Divide the top number (numerator) by the bottom number (denominator) of the fraction and the number you come up with is your decimal.
How do you change 0.25 into a fraction or mixed number in simplest form?
To convert 0.25 into a fraction, you can write it as 25/100. Simplifying the fraction by dividing both numerator and denominator by their greatest common divisor yields 1/4. Therefore, 0.25 is equivalent to the fraction 1/4.
