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Tanja and Larissa play with three coins. Both toss all three coins at the same time 80 times. Tanja gets a point if there are exactly two heads and Larissa gets a point if there is exactly one head. What score can each girl expect after 80 throws?
VincennesPBS
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Tanja and Larissa play with three coins. Both toss all three coins at the same time 80 times. Tanja gets a point if there are exactly two heads and Larissa gets a point if there is exactly one head.
What score can each girl expect after 80 throws?
learnmath
VincennesPBS
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You expect to get 2 heads just as often as you expect to get 1 head (since getting 1 head is the same thing as getting 2 tails)
For a single round, what's the probability of getting 2 heads?
Then the expected score for each one is P(2 heads) * 80
JoshDenny
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Help me reddit pls
VarshabenDoshi
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