If you look at the results of 10 service events selected at random, what is the probability that more than 3 were not-so-successful. Information to...

If you look at the results of 10 service events selected at random, what is the probability that

more than 3 were not-so-successful.

Information to solve this: The probability of success has been determined to be 0.8. The success of one service event does not impact the probability of others.