Homework Help: statistics

Posted by stephanie on Sunday, February 10, 2013 at 2:46pm.

a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 5 percent of the time. what amont should you set as the mean amount of coffee to be dispensed?

statistics - MathGuru, Sunday, February 10, 2013 at 6:04pm
Use z-scores and solve for the mean:

z = (8 - mean)/(0.03)

To find z to plug into the above formula, use a z-table and the percentage given in the problem.
statistics - Anonymous, Wednesday, May 15, 2013 at 7:37pm
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