First the 3.1 hr is one standard deviation away from the mean:
2.5 + 0.6 = 3.1 hr. then the one standard deviation away from the mean contains 68% of the total population. so the percent that is higher from 3.1 hr is
% higher 3.1 hr = ( 100 - 68) / 2
% higher 3.1 hr = 32 / 2
% higher 3.1 hr = 16 %
If I understand your question right, this is not necessary, but is very useful to keep problems organized.
Answer:
(x,y)=(309/7,-317/14) If you ever get stuck on similar problems I recommend using the photomath app.
Step-by-step explanation:
Answer:
First, you need to find what percent of students would vote for Suzy out of the original 200. To do so, divide 25/200. You get 12.5% (or 0.125). Then, multiply that percent by the 1,000 students. You will get 125 students. Hope this helps!
Or another way is to do 1000 divided by 200= 5 then you do 5 times 25 equals 125
Step-by-step explanation:
