Question

In testing 9 sedans, an automotive publication rated each on 13 different characteristics, including ride, handling, and driver comfort. Each vehicle also received an overall rating. Scores for each vehicle were as follows

car	y=Overall rating	x1 = Ride	x2 = Handling	x3 = Driver comfort
1	85	8	7	7
2	88	8	8	8
3	85	6	8	7
4	85	8	7	9
5	97	9	9	9
6	86	8	8	9
7	90	9	6	9
8	84	7	8	7
9	94	8	9	8

a) Determine the upper limit of 95% prediction interval.

b) Determine the lower limit of 95% confidence interval.

Answer 1

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