The correct answer is:
D) Jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.
Answer: look below :)
Step-by-step explanation:
5 < 11 < 42 < 2015
5 is less than 11 is less than 42 is less than 2015
5/
1
< 11/
1
< 42/
1
< 2015/
1
You can solve this with a proportion. If you know that 23 tagged alligators were in a 200 alligator sample, there are 90 tagged alligators in the entire river. Written otherwise:
23/200 = 90/x
and solve for x:
x = 782.608...
So the "best estimate" would be around 783 alligators. Hope that helps! If you liked this answer please rate it as brainliest!! thank you!!!
Answer:
5/2
Step-by-step explanation:
