What is the appropriate null hypothesis? the proportion of smokers among u.s. adults 25 or older who have a bachelor's degree is less than 0.22the proportion of smokers among u.s. adults 25 or older who have a bachelor's degree is equal to 0.22the proportion of smokers among u.s. adults 25 or older who have a bachelor's degree is not 0.22there is no relationship between level of education and smoking habits?
