Posted by Mary Ann on Sunday, January 8, 2012 at 9:30pm.
Daily output of Marathonâ€™s Garyville, Lousiana, refinery is normally distributed with a mean of
232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. (a) What is the
probability of producing at least 232,000 barrels? (b) Between 232,000 and 239,000 barrels?
(c) Less than 239,000 barrels? (d) Less than 245,000 barrels? (e) More than 225,000 barrels?

Statistics  PsyDAG, Monday, January 9, 2012 at 11:44am
Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions that correspond to the Z scores.

Statistics  Cris, Saturday, April 6, 2013 at 10:38pm
What do you mean "Z" scores in relation to the problem above? sorry, I'm totally confused and overwhelmed
Answer This Question
Related Questions
 Probability  Daily output of Marathon's Garyville, Lousiana, refinery is ...
 Statistics  Daily output of Marathon's Grayville, LA, Refinery is normally ...
 Math  An oil company owns two refineries. The daily production limits and ...
 math  An oil company operates two Southern refineries. The Alabama facility ...
 Vba  I'm trying to write a sub that asks how much oil I made, and then gives me...
 geography  What is the significance of this and what are the consquences. I don...
 Economics  What is the significance of this and what are the consquences. I ...
 economics  What is the significance of this and what are the consquences. I don...
 macroeconomics  Suppose that France and Denmark both produce oil and olives. ...
 wordmath problem  Assume that the amounts of oil produced by the first, second...
More Related Questions