if i flip a coin three times, what are the chances of getting heads one of the times

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if i flip a coin three times, what are the chances of getting heads one of the times
Message posted by andrew (via 216.237.42.99) on January 24, 2002 at 7:23 PM (ET)

more than 50% no?

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Re: if i flip a coin three times, what are the chances of getting heads one of the times
Message posted by Phil (via 66.32.156.13) on January 24, 2002 at 11:13 PM (ET)

Funny, I just used that example today with my class.

The number of heads is a binomial random variable with probability of succes for any one trial = 0.50. n=3.

The probability of EXACTLY one head in three tosses is 3/8. The probability of AT LEAST one head in 3 tosses is 7/8.

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