Question #218712

Suppose you must take the bus to school. The probability that you will have to wait for the bus is 0.25. If you don’t have to wait for the bus the commute takes 20 minutes, but it you must wait for the bus, the commute takes 30 minutes.

Find the standard deviation. 

Round your answer to 2 decimal places.


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Canada #340153 on Dec 2023