A particular professor has noticed that the number of people, P, who complain about his attitude is dependent on the number of cups of coffee, n, he drinks. From eight days of tracking he compiled the following data: People (P) 13 13 11 10 10 8 7 6
Cups of coffee (n) 1 1 2 2 3 3 4 5

Required:
a. Using regression to find a linear equation for P(n)

P(n)=
b. Find the correlation coefficient

hdjd

step-by-step explanation:

m∠a is 90°

m∠b is 40°

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus