Children laugh an average of 16.67 times an hour and adults laugh an average of 0.6667...

Children laugh an average of 16.67 times an hour and adults laugh an average of 0.6667 times an hour. Let X be the number of times a child laughs in an hour, and let Y be the number of times an adult laughs in an hour.

c. Given that an adult laughs more than 1 time in an hour, what is the probability that the adult laughs at least 3 times in the next hour?

d. Given that an adult laughs less than 3 times in the next hour, what is the probability that the adult laughs once or less?

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Expert Solution

orchestra answered 1 year ago

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