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Scenario # 1.

Say that you know that the average amount of milk that American kids drink is 9 ounces per day with a standard deviation of 3. A researcher thinks that children raised on farms will drink more milk on average due to the availability of fresh milk. She collects data from a sample of 16 farm children. As it turns out, they drink an average of 10 ounces a day.

Do the farm children drink significantly more milk per day than average?

Using z for sample means, test at = .01

In this scenario, what is the average of the population equal to?

a. 16

b. 3

c. 10

d. 9

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