I am confused what are you asking?
For 95% CI
x - 0.05s = 100
x + 0.05s = 120
Solve for x and s
The interval for u with 90% is
x - 0.10s
and
x + 0.10s
Substitute x and s
It would be B because if the total population was 100 people then 23 would vote for A, and 9 would vote for B. Then, 20 people would not vote. The total number of people now is 52, so there are 48 more people left to vote and at a 1:2 ratio it would be 16:32. If you add 16 to the original 23 for A, that would equal 39 total votes for A. If you add the 32 to the original 9 for B, that would equal 41 for B. And then 20 are left over for the non-voters. Therefore, B has the most votes.
Answer:
D
Step-by-step explanation:
If you figure out the median you'll see that for 8th grafe its 21 and 7th 25 therefore 4 points higher
