SOLUTION: An unbiased coin is tossed four times. Find the probability of the given event. (Round your answer to four decimal places.) The coin lands heads more than once.

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Question 679150: An unbiased coin is tossed four times. Find the probability of the given event. (Round your answer to four decimal places.)
The coin lands heads more than once.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The probability of successes in trials where is the probability of success on any given trial is given by:



Where is the number of combinations of things taken at a time and is calculated by

But you need the probability of 2 heads PLUS the probability of 3 heads PLUS the probability of 4 heads, so:



Happy calculating.

John

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