These ad agencies must focus on their target audience, which are the students. Hence, they should gather data on the pool that will surely comprise of students. For agency B, social media posting is not a good source pool. It's true that students are very participative and opinionated in social media. However, they can't be sure that these are students. Some parents are in social media, as well. Some are working individuals, and some are out of school youth. Unlike agency A, agency B has to sort out profiles first and identify which ones are students. Hence, agency A will produce a fair sample of the student population because it is unarguably true that everyone in the school enrollment data are students.
The answer is B.
Answer:
25 m by 17.5 m
Step-by-step explanation:
7/2 = 3.5
3.5 * 5 = 15 + 2.5 + 17.5
10/2 = 5
5 * 5 = 25
Answer:
every group of her community
Step-by-step explanation:
To get an appropriate sample for her survey, she needs to survey people from various groups of the community.
If she surveys only dog owners, even only pet owners, chances are most people in that group would be in favor of the park, biased sample.
If she surveys only non-pet owners, the results will most likely show a minority of support.
The pet owners (or just dog owners) should be surveyed in a relative proportion of the general population of the community, so their opinion is neither over-weighted nor under-weighted in the results.
