Complete question is;
A student artist randomly selected two media from among: charcoal sketches, pencil drawings, and oil paintings, and then submitted all of her works in that media for a gallery showing. Identify the kind of sample that is described.
Answer:
Cluster sample
Step-by-step explanation:
Looking at the question, we can see that the media has already been grouped into 3 parts namely charcoal sketches, pencil drawings, and oil paintings. It has already been grouped into multiple groups for easy selection or identification.
Now this type of grouping is synonymous with cluster sampling because cluster sampling is a probability sampling technique in which the researchers divide the population into multiple groups known as clusters for research and this question clearly shows that the media has been grouped.
Answer: 3 step by step approach
Step-by-step explanation:
Since the Chancellor has to use a multi-stage sample to carry out the survey, he or she should carry it out step by step.
First, he or she should randomly sample some solar systems from the galaxy, then secondly sample planets within that solar system, and finally randomly sample countries within the selected planets
Answer:
Step-by-step explanation:

There are six sides on a dice.
If it is going to roll greater than 2, then it will be either a 3, 4, 5, or 6.
This is four out of the six sides.
Therefore the fraction is 4/6.
It can be reduced to 2/3.