Answer: Null hypothesis :[tex]H_0:\ p=0.22[/tex]
Alternative hypothesis : [tex]H_a:\ p<0.22[/tex]
Step-by-step explanation:
Given claim : The proportion of U.S. adults age 25 or older who smoke : [tex]p=0.22[/tex]
A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree. i.e. [tex]p<0.22[/tex]
Since the null hypothesis is a fact checked by the researcher or the experimenter that always contains a equals to sign.
∴ Null hypothesis :[tex]H_0:\ p=0.22[/tex]
Alternative hypothesis : [tex]H_a:\ p<0.22[/tex]
