Math Question I Need Help with TODAY 5.6 Question 6!!

Question

The accompanying data represent the percentages of teenagers in various countries that have used certain drugs. Complete parts​ (a) through​ (c) below.

Country	A	B	C	D	E	F	G	H	I	J	K
Drug​ 1, x	21	18	41	4	36	20	23	5	7	52	35
Other​ Drugs, y	4	4	20	2	16	8	15	3	4	31	24

FILL IN THE BLANKS MARKED WITH BLACK LINES TOWARDS THE BOTTOM PLEASE HELP

a. Determine the correlation coefficient between the percentage of teenagers who have used Drug 1 and the percentage who have used other drugs.

R = ___________

​(Round to two decimal places as​ needed.)

b. Find the equation of the regression line for the percentage of teenagers who have used Drug 1 and the percentage who have used other drugs.

y=_________ x +​(________)

​(Round to two decimal places as​ needed.)

c. What percentage of teenagers can be anticipated to use illegal drugs other than Drug 1 in a country where10​% of teenagers have used Drug​ 1?

___________%

​(Round to the nearest whole number as​ needed.)

Answer 1

I just cut and paste into Google spreadsheet and did a =Correl( , ) and found the correlation is .93. I then used the slope and intercept functions, making sure I chose the other drug %s as my y, and the drug 1 as x, to get the formula: .59*X- 2.09= predicted value of Y.

If x= 10% then the predicted value of Y would be .59*10-2.09 or 5.90-2.09=3.81 %.