This is a contingency table of probabilities for television viewing and income. What is the joint probability of "High Income" and ?"Never"?
VIEWINGFREQUENCY HIGH INCOME MIDDLE INCOME LOW INCOME TOTALS
Regular 0.05 0.10 0.05 0.20
Occasional 0.15 0.25 0.10 0.50
Never 0.05 0.20 0.05 0.30
Totals 0.25 0.55 0.20 1.00