According to the centers for disease control and prevention, the proportion of u. s. adults age 25 or older who smoke is 0.22. a researcher suspects that the rate is lower among u. s. adults 25 or older who have a bachelor's degree. she took a random sample of 275 u. s. adults 25 or older who have a bachelor's degree, and the proportion of smokers in her sample is 0.18. what is the null hypothesis in this case? what is the alternative hypothesis in this case?

Null hypothesis :

Alternative hypothesis :

Step-by-step explanation:

Given claim : The proportion of U.S. adults age 25 or older who smoke :

A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree. i.e.

Since the null hypothesis is a fact checked by the researcher or the experimenter that always contains a equals to sign.

∴ Null hypothesis :

Alternative hypothesis :

what do u need to know

step-by-step explanation:

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !