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The amount of time, in minutes, that a person must wait for a taxi is uniformly...

The amount of time, in minutes, that a person must wait for a taxi is uniformly distributed between 1 and 30 minutes, inclusive.

1.Find the probability density function, f(x).
2.Find the mean.
3.Find the standard deviation.
4.What is the probability that a person waits fewer than 5 minutes.
5.What is the probability that a person waits more than 21 minutes.
6.What is the probability that a person waits exactly 5 minutes.
7.What is the probability that a person waits between 11 and 15 minutes.
Math   Statistics-And-Probability   
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