The correlation between the students total scores prior the final exam and their final exam scores is r=.7. The pre exam totals for all students in the course have a mean 270 and a standard deviation 25. The final exam scores have mean 70 and standard deviation 10. The teacher misplaced Peter's final exam but knows that his total before the exam was 280. He decides to predict her final exam score from her pre exam total.

A)Find th equation for the appropriate LSRL for the teachers prediction?

Use the LSRLin part A to predict Peter's final exam score?

3/6   and 9/18

step-by-step explanation:

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

the answer is b.)

< 1=< 2

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .