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A fair quarter, a fair dime, a fair nickel, and a fair penny are tossed. Find the probability of obtaining exactly one head.

User X Zheng
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1 Answer

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We know that the probability of getting a head in a single coin is:


p=0.5

Now, we can calculate the probability of X out of N coins landing heads up with the binomal distribution:

With p = 0.5 and N = 4, we get:

Subtituting X = 1 ("getting one head"), we get that:


P=0.0625

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User ElSajko
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