1. A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000. Is this information different from the United Nations report at .01 significance level.

2. A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6% with a standard deviation of 3.9%. The mean on a sample of 8 utility stocks was 10.9% with a standard deviation of 3.5%. At the .05 significance level, is there a difference in the variation of the oil stocks?

Must be clearly defined

1. Hypothesis statements

2. critical value

3. calculated statistics

4. p-value

5. decision to reject or not reject

6. final interpretation of decision #5