Question

Suppose you flip four coins and you want to determine the probability ofexactly three of these coins flipping a head..If flipping three heads is afavorable compound event, what ratio can be used to determine thisprobability?

Answer 1

Ok, so:

From the problem, we know that there are two possibilities when we are flipping a coin. It could be head, or stamp.

So, we notice that flipping three heads is a favorable compound event, and the probability of any situation has the following formula:

P = (favorable compound event) / (All possible events)

If we have four coins, we notice that there are four heads and four stamps. So, if we flip the four coins, we would get 8 possible events.

Then, if 3 coins flipping a head is a favorable compound event and 8 are all the possible events, probability will be:

P = 3/8.