Answer:
30
Step-by-step explanation:
2/3 = .6
18/.6 = 30
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:

The volume of a rectangular prism is given by:
V = (w) * (l) * (h)
Where,
w: width
l: length
h: height
Substituting values we have:
1472 = (20) * (36.8) * (h)
Clearing h we have:
h = (1472) / ((20) * (36.8))
h = 2 m
Answer:
the water in the pool is 2m deep
What you have is a valid ratio in theory, but it might be easier to understand if it were simplified to integers:
78:13:65
It also depends on what your teacher is asking of you.
Answer:
2/3
Step-by-step explanation: