Question

assume that the amount of time (x), in minutes that a person must wait for a...

assume that the amount of time (x), in minutes that a person must wait for a bus is uniformly distributed between 0 & 20 min.
a) find the mathematical expression for the probability distribution and draw a diagram. assume that the waiting time is randomly selected from the above interval
b) find the probability that a eprson wait elss than 15 min.
c) find the probability that a person waits between 5-10 min.
d) find the probability the waiting time is exaclty 12 min.
e) find the expected(mean) waiting time at the bus station
f) find the standard deviation of the waiting time at the bus station
Math   Statistics-And-Probability   
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given that amount of time X that a person wait for bus is uniformly distributed between 0and 20 min.

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