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/√(n-1)

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 - Ellen, Fern, and Kyle are all drinking milk from the same size cartons in...
- Kennedy - There are 28 classes at an elementary school. The school cafeteria ...
- Math - 100 milk cartons were put out for breakfast. At the end of breakfast ony ...
- English - 1. There are a lot of empty milk packs which we can recycle. 2. There ...
- math - John was in charge of buying milk for a class of 32 students. Milk is ...
- science (please help) - According to the label on the skim milk, 1 cup (244 mL) ...
- reading - i really need to know the them for "the face on the milk carton". can ...
- Math - Apples are sold in cartons of 25. David bought home 2 cartons an found 3 ...

More Related Questions