20

The following table shows the Myers-Briggs personality preferences for a random sample of 400 people in the listed professions. Occupation Extroverted Introverted Row Total Clergy (all denominations) 61 46 107 M.D. 68 90 158 Lawyer 53 82 135 Column Total 182 218 400 Use the chi-square test to determine if the listed occupations and personality preferences are independent at the 0.1 level of significance. What are the degrees of freedom? 0 2 0 3 0 4 0 5 0 6