Posted by Bill on .
Assume the wait time to see a cardiologist at a certain clinic are uniformly distributed between 7 minutes and 23 minutes. Calculate the probability a randomly selected patient waits at least 18 minutes to see the cardiologist.
The random variable, Z, is associated with a normal distribution having a mean of 0 and a standard deviation of
A. calculate P(Z > 1.84)
B. Determine the Z score Z_0 such that P(Z less than or equal to Z_0) = 0.0038

Statistics 
PsyDAG,
SD estimated at Range/4
Use same equation and table.