Observed frequencies	Illness
Emphysema	Heart problem	Cancer	Row Totals
Smoking Status	Smoker	150	70	100	320
Non-smoker	50	130	500	680
	Column Totals	200	200	600	1,000

We are interested in determining if the proportions of smokers in the three categories are equal to each other. The expected number of smokers with cancer is Answer , the calculated value for the test statistic equals Answer , and the number of degrees of freedom associated with this problem is Answer . (Your answers for the expected number of smokers with cancer and degrees of freedom should be whole numbers, but round your answer for the test statistic to one decimal place