New to Stats. Just trying to understand what is going on. Please Help.

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pbrain26

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Jul 9, 2019
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Sponsors of a local charity decided to attract wealthy patrons to its $500-a-plate dinner
by allowing each patron to buy a set of 20 tickets for the gaming tables.
The chance of winning a prize for each of the 20 plays is 50-50.
If you bought 20 tickets,
what is the chance of winning 15 or more prizes?

Please assist, I don't even know what kind of probability i'm looking for, let alone how to start.
 
pbrain26 said:
Sponsors of a local charity decided to attract wealthy patrons to its $500-a-plate dinner
by allowing each patron to buy a set of 20 tickets for the gaming tables.
The chance of winning a prize for each of the 20 plays is 50-50.
If you bought 20 tickets,
what is the chance of winning 15 or more prizes?

Please assist, I don't even know what kind of probability i'm looking for, let alone how to start.
Click to expand...
Since it 50-50 that you win then it is similar to tossing a coin. Say you win a prize if you toss a head and lose if you toss a tail.
So the problem becomes: Toss a coin 20 times and find the probability that you get 15 or more heads.
I suspect that you can't solve this but it is always best to think about a probability problem in a more familiar way.
As pointed out, you need to learn about the Binomial Distribution.
Once you read up on it you can/should come back and ask some questions if you have any.
 
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