Answer:
"Proponents of a local ballot measure conduct a survey of the city by randomly selecting 100 potential voters from each of its 18 zip codes" is an example of stratified sampling
Step-by-step explanation:
The stratifed samplig methos its a probabilistical method that takes all the universe studied and divide this into different groups. In this case the universe is all the population divided into the 18 zip codes).
After that, it randonbly selects the subjects of every group and generates the statistical sample.
In this case, it can be used the proportional stratified samplig where you take the porportion of voters in every zip code and use ir¡t as the number of voters selected on every zip code.
How does it can be perform? . Let's see: For example:
- Percentaje on the total population in zip code 1: 18%
- Number of subjects of zip code 1 in the sample: 18
- and so on...
So you will have a 100 subject`s sample based on the method of proportional stratified sampling
It can also use the non proportional stratified sampling method taking the same number of subjects on every zip code.
Answer:
Step-by-step explanation:
less than I think
Answer:
x=23 degrees
Step-by-step explanation:
We know that the sum of interior angles in a triangle is equal to 180 degrees, and we see that one of the angles is 67 and the other one is 90 degrees. So we can do this two ways, ones more complicated then the other that you may not of learned yet
The first way:
You simply do 180-67-90 to get 23
Second way:
We can use the exterior angle theorem to know that 67+x=90 degrees so you simplify on both sides and you get 23 again.
Answer:
v=2143.57
Step-by-step explanation:
4/3 x 3.14 x 8³
3.14 x 512 x 4/3
3.14 x 512=1607.68
1607.68 x 4/3=2143.57333333
round to nearest hundreth
v=2143.57
