[67.9 %, 82.1 %] is the 95% confidence interval for the proportion of test-takers answering the question correctly. So we have [67.9 %, 82.1 %] In a random sample of 144 test-takers with 75% answered the question correctly. So the answer in this question is [67.9 %, 82.1 %].
It’s C
Because In option A and B the x-values are repeated
Good luck!
Total distance =(250+90)n
=300 m
time =12 sec
speed time/distance
speed = 12/300
speed =25 sec
4+4 is 8 lol thanks for the answer