AP stats

3. How would you expect your confidence interval to be affected if you... 3.a) Increase n? 3.b) Increase the confidence level? 4. Determine the degrees of freedom for a Chi-Squared test with a table which has 17 columns and 12 rows. 5. What is the p-value for a chi-squared value of 2.80 and 4 degrees of freedom? 6. A biologist performs a chi-squared test on the presence of a certain bat in various regions of a state to compare actual and the expected values. The test results in a large chi-squared value. What does this result represent