The y-intercept of a line is where the line goes across the y line.
Does that answer your question?
900=(1/2)*b*10*15
1800=150b
b=12
I hope you can figure out FC with this info.
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-
, where
is the sample mean and ME is the margin of error .
Given : The sample mean : 
Margin of error : 
Then , the range of values (confidence interval) likely to contain the true value of the population parameter will be :-

Hence, the range of values likely to contain the true value of the population parameter = 