Answer:
use the process of centrifugation to separate cream from milk.
Step-by-step explanation:
We put the milk in a close container in a big centrifuge machine and the container is spun at a very high speed.
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.
Ans.......
YTC ...................................
Step-by-step explanation:
Answer:
50 minutes
Step-by-step explanation:
it takes 80 minutes for 5 pipes
so for 1 pipe it will take 5x80=400min
and for 8 pipes it will take 400/8=50min
A number cube has 6 probable possible sides: 1,2,3,4,5,6. These are all equally probable. The chance of rolling 2 is 1/6, the chance of rolling something other than 2 is 5/6.
If Randy rolls 72 times, we should view the probability out of 72, so we should convert 5/6 like this:
6x12=72 (Possibility)
5x12=60 (Probability)
Your answer:
P(1,3,4,5,6) = 60/72
