Posted by gs on Sunday, October 10, 2010 at 2:05am.
A carton of soy milk states on the label that it contains 956 mL.
The volume of soy milk in 9 randomly chosen cartons is measured and the mean found to be 958.72 mL.
Assume that the cartons are filled so that the actual amounts are normally distributed with a mean of 956 mL and a standard deviation of 10.2 mL. Find the probability that a sample of 9 cans will have a mean amount of less than 958.72 mL.

staTS  PsyDAG, Sunday, October 10, 2010 at 2:02pm
Z = (mean1  mean2)/standard error (SE) of difference between means
SEdiff = √(SEmean1^2 + SEmean2^2)
SEm = SD/√(n1)
Since only one SD is provided, you can use just that to determine SEdiff.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to that Z score.
Answer This Question
Related Questions
 jik  A carton of soy milk states on the label that it contains 956 mL. The ...
 Math  Justine measures the milk in two different cartons. One carton contains 1...
 Math  100 milk cartons were put out for breakfast. At the end of breakfast ony ...
 Kennedy  There are 28 classes at an elementary school. The school cafeteria ...
 Math  In the cafeterÃa,100 milk cartons were put out for breakfast at the end ...
 math  John was in charge of buying milk for a class of 32 students. Milk is ...
 Math  Ellen, Fern, and Kyle are all drinking milk from the same size cartons in...
 Maths  Hi can someone Help me ? The number of cartons of juices to the number ...
 maths  Need Help, The number of cartons of juices to the number of cartons of ...
 English  1. There are a lot of empty milk packs which we can recycle. 2. There ...
More Related Questions