The following data are for freshman students at Spartan University:
(a) Write the raw score regression equation for predicting Y from X and simplify it.
(b) John and Will score 485 and 710, respectively, on the aptitude test. Predict the freshman GPA for each.
(c) Compute the standard error of prediction.
(d) Set up the 95% confidence limits around John's and Will's predicted GPAs.
(e) For students with aptitude scores the same as John's, what proportion would be expected to obtain a GPA better than the freshman mean? What proportion would be expected to obtain a GPA of 2.0 or below?
(f) For students with aptitude scores the same as Will's, what proportion would be expected to obtain a GPA of 2.5 or better?

Question

The following data are for freshman students at Spartan University:  
 (a) Write the raw score regression equation for predicting Y from X and simplify it.   
(b) John and Will score 485 and 710, respectively, on the aptitude test. Predict the freshman GPA for each. 
(c) Compute the standard error of prediction. 
(d) Set up the 95% confidence limits around John's and Will's predicted GPAs. 
(e) For students with aptitude scores the same as John's, what proportion would be expected to obtain a GPA better than the freshman mean? What proportion would be expected to obtain a GPA of 2.0 or below? 
(f) For students with aptitude scores the same as Will's, what proportion would be expected to obtain a GPA of 2.5 or better?

Quizplus · Accepted Answer

The Answer of The following data are for freshman students at Spartan University:  
 (a) Write the raw score regression equation for predicting Y from X and simplify it.   
(b) John and Will score 485 and 710, respectively, on the aptitude test. Predict the freshman GPA for each. 
(c) Compute the standard error of prediction. 
(d) Set up the 95% confidence limits around John's and Will's predicted GPAs. 
(e) For students with aptitude scores the same as John's, what proportion would be expected to obtain a GPA better than the freshman mean? What proportion would be expected to obtain a GPA of 2.0 or below? 
(f) For students with aptitude scores the same as Will's, what proportion would be expected to obtain a GPA of 2.5 or better?

The Following Data Are for Freshman Students at Spartan University