In the united states, there has historically been a strong relationship between
ID: 3290348 • Letter: I
Question
In the united states, there has historically been a strong relationship between smoking and education, with well-educated people less likely to smoke. To examine whether this pattern has changed, a sample of 459 men was selected at random from those who had visited a health center for a routine check-up over the course of the past year. Education is classified into three categories corresponding to the highest level of education achieved, and smoking status is classified into four categories. Suppose we wish to test the null hypothesis that there is no association between education level and smoking status. Under the null hypothesis the expected number of nonsmokers with a high school education is: A. 62.34. B. 59.48. C. 42.37. D. 50.93.Explanation / Answer
Expected number of nonsmoker with hight school eduacation is
Row total * column total / table total
187 * 146 / 459 = 59.48