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 :

y=7/5x

Step-by-step explanation: use the formula (y2-y1)/(x2-x1) to find the slope. The coordinates are (5,7) and (0,0). (0-7)/(0-5) is 7/5. Slope = 7/5 and since the line passes through the origin the b is 0.