A particular professor never dismisses class early. 0 25 50 Let x denote the amount of time past the

A particular professor never dismisses class early. 0 25 50
Let x denote the amount of time past the hour (in minutes) that elapses before
the professor dismisses class. Suppose that the density curve shown in the
following figure is an appropriate model for the probability distribution of x:

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a. What is the probability that at most 5 min elapse before
dismissal? b. What is the probability that between 3 and 5 min elapse before
dismissal? c. What do you think is the value of the mean of this distribution?