sevay taken outside a resturant for wating time. mean in 45min and standard deviation is 12min.

determine the probability that a random person had to wait less that 20 min.

can I use normalcdf(0,20,45,12) to get the right answer?

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- May 27th 2005, 03:52 PMkelseycan i use normalcdf for this question
sevay taken outside a resturant for wating time. mean in 45min and standard deviation is 12min.

determine the probability that a random person had to wait less that 20 min.

can I use normalcdf(0,20,45,12) to get the right answer? - Aug 20th 2005, 07:19 PMTheFarmer42
You could use a normal cdf - shouldn't be a huge problem. However, a lot of queueing problems assume a poisson distribution from memory.