Slope of the line passes through (5,10) and (7,12) is 1.
Step-by-step explanation:
Given,
The two points are (5,10) and (7,12).
To find the slope passing through the given points.
Formula
The slope of the line passing through () and (
) is
Now, putting we get,
Slope = =
= 1
Hence,
Slope of the line passes through (5,10) and (7,12) is 1.
121 is big enough to assume normality and not worry about the t distribution. By the 68-95-99.7 rule a 95% confidence interval includes plus or minus two standard deviations. So 95% of the cars will be in the mph range
The question is a bit vague, but it seems we're being asked for the 95% confidence interval on the average of 121 cars. The 121 is a hint of course.
The standard deviation of the average is in general the standard deviation of the individual samples divided by the square root of n:
So repeating our experiment of taking the average 121 cars over and over, we expect 95% of the averages to be in the mph range
That's probably the answer they're looking for.
Answer:
All real numbers
Step-by-step explanation:
To find the range of the function draw the graph of ths function (see attached diagram for details).
Since the base of the logarithm is the graph is increasing and passes through the point (1,0).
The domain of this function is
The range of this function is
or all real numbers.
