Question

A poll was conducted in which every 49th student entering a school is polled. There were 496 students that entered the school on the day of the poll. Which type of sampling was used?

convenience
stratified
systematic
cluster

Answer 1

systematic

Answer 2

Suppose that the time it takes to do a job is inversely proportional to the number of workers. That is, the more workers on the job the less time required to complete the job. If it takes 3 workers 16 days to finish a job, how long will it take 8 workers?

6 days
10 days
2 days
14 days

Answer 3

@MathMan77