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The minutes to commute to work is exponentially distributed with a mean of 20 minutes. a....

The minutes to commute to work is exponentially distributed with a mean of 20 minutes.

a. Find the m value.


b. Find the standard deviation.



c. Find the probability of commuting less than 10 minutes. ?(? < 10)



d. Find the probability of commuting greater than 25 minutes? ?(? > 25)



e. Find the probability of commuting between 15 and 22 minutes? ?(15 < ? < 22)



f. Find the probability of commuting 5 minutes? ?(? = 5)

Math   Statistics-And-Probability   
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