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Chapter 8: Q. 24 (page 393)

Cheese Consumption. The U.S. Department of Agriculture reports in Food Consumption, Prices, and Expenditures that the average American consumed 33lbof cheese in 2010. Suppose that you want to decide whether last year's mean cheese consumption is greater than the 2010mean.

a. Identify the null hypothesis.

b. Identify the alternative hypothesis.

c. Classify the hypothesis test as two tailed, left tailed, or right tailed.

Short Answer

Expert verified

The null hypothesis for a. and b. are H0:渭=33.0lb,H0:渭>33.0lbrespectively. For c. the test is right-tailed as(>)appears in b.

Step by step solution

01

Step 1. Given Information 

The U.S. Department of Agriculture reports in Food Consumption, Prices, and Expenditures that the average American consumed33lbcheese in the year 2010.

02

Step 2. Solving for a.

Null hypothesis:
H0:渭=33.0lb
As the last year's mean cheese consumption is not greater than the 2010mean.

03

Step 3. Solving for b.

Alternative hypothesis:
H0:渭>33.0lbAs the last year's mean cheese consumption is not greater than the 2010mean.

04

Step 4. Solving for c.

Upon checking the alternative hypothesis in part b. we know that greater than (>)sign appears . Hence, we can say it is right tailed.

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