Use @RISK to draw a triangular distribution with parameters 300, 500, and 900. Then answer the following questions.  a.  What are the mean and standard deviation of this distribution?  b.  What are...

Use @RISK to draw a triangular distribution with parameters 300, 500, and 900. Then answer the following questions.


a.  What are the mean and standard deviation of this distribution?


b.  What are the 5th and 95th percentiles of this distribution?


c.  What is the probability that a random number from this distribution is less than 450?


d.  What is the probability that a random number from this distribution is greater than 650?


e.  What is the probability that a random number from this distribution is between 500 and 700?