Monday, April 26, 2010

How do I calculate this statistics problem with a pencil and paper?

What is the probability that the average number of orders per month will be less than 25, if the Mean is 34 and the standard deviation is 10.2?

How do I calculate this statistics problem with a pencil and paper?
You could calculate z = (25 - 34)/10.2 by hand but you must then have access to z tables to get the actual probability.
Reply:ummmmm.........


idk


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