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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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A simple random sample of 35 observations is derived from a normally distributed population with a known standard deviation of 6.3. Compute the margin of error with 95% confidence
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