Probability

New member
A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.I'm new at Statistics and don't know where to start with this problem. Thanks

pka

Elite Member
A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.I'm new at Statistics and don't know where to start with this problem. Thanks
That means either five threes or six threes.
$$\displaystyle \binom{6}{5}\left(\frac{1}{6}\right)^5\left(\frac{1}{6}\right)+\left(\frac{1}{6}\right)^6$$