Question

Many consumers pay careful attention to stated nutritional contents on packaged foods when making purchases. It is therefore important that the information on package is accurate. A random sample of n=12 frozen dinner of a certain type was selected from production during a particular period, and the calorie content of each one was determined as follows:

255	244	239	242	265	245
259	248	255	226	251	233

The stated calorie content on package was 240. Does the data suggest that true average calorie content differ from the stated value? Use alpha=0.05

Based on the scenario above answer the following questions:

1. State the degrees of freedom.                                               

2. State whether it is a large or small sample test.                        

3. Indicate whether it is a comparison of one or two samples.       

4. What are the null alternative hypotheses for this test?                

5. State whether it is a right tailed, left tailed, or two tailed test.  

6. What is the t-statistic?                                                             

7. What is the critical value(s) or p value(s)                                    

8. What is the appropriate conclusion for this test?                        

Answer 1