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Null Hypothesis Statistics

Question: A researcher is using a sample for n=16 lab rats to examine the effect of a new diet drug. It's known that under regular circumstances these rats eat an average of 10 grams of food each day. The distribution of food consumption is normal with a standard deviation=4. The expected effect for the drug is to reduce food consumption. The purpose of the experiment is to determine whether or not the drug really works. State the null and alternative hypothesis in word form and express in symbols.

This is my first statistics class. I have great difficulty setting up problems.

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Null hypothesis (Ho): there's no difference in the rats' food consumption between ...

Solution Summary

This solution provides an explanation to illustrate how to approach formulating the two hypotheses needed to set-up this statistics problem. This is completed in about 60 words.