An experiment was performed on a certain metal to determine if the strength is a function of heating time.Partial results based on a sample of 10 metal sheets are given below.The simple linear regression equation is = 1 + 1X .The time is in minutes and the strength is measured in pounds per square inch,MSE = 0.5, = 30, = 104. Determine the 95% confidence interval for the mean value of metal strength when the average heating time is 4 minutes.
A)(4.721 5.279)
B)(4.523 5.477)
C)(3.325 4.675)
D)(4.325 5.675)

Question

An experiment was performed on a certain metal to determine if the strength is a function of heating time.Partial results based on a sample of 10 metal sheets are given below.The simple linear regression equation is  = 1 + 1X .The time is in minutes and the strength is measured in pounds per square inch,MSE = 0.5,  = 30,  = 104. Determine the 95% confidence interval for the mean value of metal strength when the average heating time is 4 minutes.
A)(4.721 5.279) 
B)(4.523 5.477) 
C)(3.325 4.675) 
D)(4.325 5.675)

Quizplus · Accepted Answer

= 1 + 1(4)= 5Distance Value = (1/10)+ ((4 - 3)²/(104 - ((30)²/10)))= 0.17143t.025,8 = 2.3065 F1F1F1S1F1F1F10 (2.306)(.707)(F1F1F1S1F1F1F100.17143)F1F1F1S1F1F1F10 4.325 to 5.675

An Experiment Was Performed on a Certain Metal to Determine