Question

Refer to the Weekly Earnings data set below.
 

College Student Weekly Earnings (n = 5)
Hours Worked (X)				Weekly Pay (Y)
	10				93
	15				171
	20				204
	20				156
	35				261

(a) Use MegaStat or Minitab to find confidence and prediction intervals for Y using the following set of x values: 12, 17, 21, 25, and 30. (Round your answers to 3 decimal places.)
 
Predicted values for: Weekly Pay (Y)

		95% Confidence Intervals		95% Prediction Intervals
Hours Worked (X)	Predicted	lower	upper	lower	upper
12	128.314
17	158.743
21	183.086
25	207.429
30	237.857

 
(b) Report the 95 percent confidence interval and prediction interval for x = 17. (Round your answers to 3 decimal places.)
  
95% confidence interval is from  to  .
 
95% prediction interval is from  to  .
 
(c) Calculate the 95 percent confidence interval for μ_y using the appropriate method. (Round your answers to 3 decimal places.)
  
95% confidence interval is from  to  .

I know the answers from part a - b; however, part c is very confusing.

Answer 1