Question

A group of high school seniors took a scholastic aptitude test. The resulting math scores had a mean

510.2510.2

with a standard deviation of

197.1197.1​,

verbal scores had a mean

516.4516.4

with a standard deviation of

165.6165.6​,

and the correlation between verbal and math scores was

r equals 0.733 .r=0.733.

Answer the questions below.

​a)	What is the​ correlation?

The correlation is

nothing.

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

​b)	Write the equation of the line of regression predicting verbal scores from math scores.

ModifyingAbove y with caretyequals=nothingplus+nothingx

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

​d)	A person tells you her math score was 355355. Predict her verbal score.

The student is expected to have a verbal score of

nothing.

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

​e)	Using the predicted verbal score from part​ (d) and the regression equation ModifyingAbove math with caret equals 59.899 plus 0.872 left parenthesis verbal right parenthesismath=59.899+0.872(verbal)​, predict the​ student's math score.

The predicted math score is

nothing.

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

Answer 1