Averages and Probability#4

Jonah has 10 coins. Is the "Average flip" 5 heads and 5 tail the most likely combination?

No Yes

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2 solutions

Jason Gomez
Feb 27, 2021

The probability of 5 heads and 5 tails coming is ( 10 5 ) 2 10 25 % \frac{{10}\choose{5}}{2^{10}}≈25\% which is the highest probability compared to 4 heads,7 heads,etc..

Andrei Zonga
Feb 26, 2021

Yes, because the chance of getting heads is equal to the chance of getting tails (assuming a fair Coin). That means, that on average, we would expect 1/2*10=5 tails and 5 heads to be the likeliest outcome.

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