Use the 2 highlighted points to find the equation of a trend line in slope intercept form
2 answers:
Answer:
The slope intercept form of trend line is y=200x-399000.
Step-by-step explanation:
The slope intercept form of a line is
Where, m is slope and b is y-intercept.
The coordinates of highlighted points are (2000,1000) and (2012,3400).
If a line passes through two points then the slope of the line is
The slope of the trend line is
The slope of the line is 200.
Point slope form of a line is
The slope of the trend line is 200 and it passes through (2000,1000). So, the equation of trend line is
Add 1000 on both the sides.
The slope of the line is 200 and y-intercept is -399000.
Therefore the slope intercept form of trend line is y=200x-399000.
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Hope this helped
Hope this helped
Answer:
We are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%
Step-by-step explanation:
-From the given information, .
-We calculate the confidence interval using this value at 95% confidence level:
So, the 95% confidence interval is (0.6515,0.6585).
Hence, we are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%.