Answer: 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 : 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Answer:
B
Step-by-step explanation:
Two negatives is a positive, and you want your outcome to be a positive x, therefore b is the correct answer.
It should open up because the a which is 4 is positive
Answer:

Step-by-step explanation:
The volume of a cylinder,
is given by the formula,

Where,
is the radius and
is the height of the cylinder.
Here,
,
. Plug in these values and solve for radius,
.
This gives,

Taking square root both sides, we get

Therefore, the radius of the cylinder can be expressed as
.