Answer:
The null hypothesis is 
Step-by-step explanation:
According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22
This means that at the null hypothesis, it is tested if the proportion is in fact 0.22, that is:

A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree or higher education level.
At the alternative hypothesis, it is tested if the proportion is lower than 0.22, that is:

So a circular pool will be in the shape of a cylinder. and the formula for finding the area of a cylinder is

. r=radius, h=height. If we put the numbers into the equation it is

.14 squared is 196 and 4*14= 56. So our equation is now

. 2*pi=6.28318530718 but let's round that to 6.283. So now our equation is much simpler 6.283(196)+6.283(56). Just multiply them. 1231.504+351.858= <span>
1583.362</span> is your final answer.
Answer:
The width of the rectangle is <u>7 feet</u>.
Step-by-step explanation:
Given:
The perimeter of a rectangle is 54 feet, and the length is 13 feet more than the width.
Now, to find the width of the rectangle.
Let the width be 
So, the length is 
Perimeter = 54 feet.
Now, to get the width we put formula:




<em>Subtracting both sides by 26 we get:</em>

<em>Dividing both sides by 4 we get:</em>

Therefore, the width of the rectangle is 7 feet.
Answer:
4
Step-by-step explanation: