##### Find the expected value.

label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet \$5

State lottery ticket costs \$1; the probability of winning \$1,000,000 is 0.0000001, probability of winning \$1,000 is 0.000005, and the probability of winning \$10 is 0.0002. Find the expected value.

Oct 21st, 2015

1,000,000 * .0.0000001 = 0.1

1000 * 0.000005 = 0.005

10 * .0002 = .002

.1 + .005 + .002 = \$0.107 :)

Oct 21st, 2015

I forgot to finish the last part of the question, it says Find the expected value (gain or loss) on one ticket. Does that change anything?

Oct 21st, 2015

Ah :)
You spent \$1 for a ticket that has only an expected value of \$0.107. So the expected return is 1-.107 = -0.893. It's a loss :)

Oct 21st, 2015

Thank you so much!

Oct 21st, 2015

Happy to help!

Oct 21st, 2015

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Oct 21st, 2015
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Oct 21st, 2015
Sep 22nd, 2017
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