# Consumer Math

Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for sale will have a weight more than 196 oz.

Carl decides to answer the following questions about the population of vegetables from these sample statistics:

Carl calculates the z-score corresponding to the weight 196 oz. ____

Using the table (column .00), Carl sees the area associated with this z-score is 0. _____

Carl rounds this value to the nearest thousandth or 0. ______

Now, Carl subtracts 0.50 - 0. = %.

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1. I suggest you follow the instructions in the steps outlined for you.
Looks very straight-forward to me
look in your notes or textbook to see how you can find the z-score.
As for tables, they are really not used anymore, there are enough on-line charts or applets to find the above values
e.g. http://davidmlane.com/normal.html
is one of the best.

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posted by Reiny

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