Question

Evelyn goes to a middle school that includes grades 6, 7, and 8. She wants to estimate the percentage of students in the school who ride the bus to school. She selects a random sample of 200 students to survey who are attending an after-school activity. She determines that 38% of the students at the activity ride the bus to school.

Which statement about Evelyn’s sample is true?

A. The sample is the percentage of students who ride the bus.
B. The sample might not be representative of the population because it only includes students who are attending an after-school activity.

C. The sample shows that exactly 38% of the students in the school ride the bus.

Answer 1

wrong

Answer 2

Evelyn goes to a middle school that includes grades 6, 7, and 8. She wants to `estimate` the percentage of students in the school who ride the bus to school. She selects a random sample of `200 students` to survey who are attending an after-school activity. She determines that 38% of the students at the activity ride the bus to school.

so that is not THE EXACT value -- we would call it exact if she would ask every one of them, so right off the bad c is not true

Answer 3

I would choose B.), It only shows the ones who are attending after-school activities. She didn't record everyone's response.

Answer 4

agreed

a wouldnt make any sense as theyre not doing any afterschool act.

its not c as above, so B is the right one.