Answer:
Step-by-step explanation:
First you can find the slope of the line that would pass through those two points using the formula:
m =
m =
m=5/4
Now you can just plug the slope and one of the points into point-slope form for an equation of the line that will pass through both points. You can choose either point here: I'll just use the first one.
So,
(don't leave out the parentheses!)
Answer:
B. 97
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
How many students should be sampled to be within 1 drink of the population mean with 95% probability?
This is n when
We know from preliminary studies that the standard deviation is around 5, so
We round up, so the correct answer is:
B. 97