Prediction Interval and Tolerance Interval

No idea how to start this problem.

A sample of 17 high-mileage traction motors was selected and the amount of cone penetration (mm/10) was determined both for the pinion bearing and for the commutator armature bearing, resulting in the following data: * This exercise asks for a Prediction Interval and a Tolerance Interval. These are not the same as a Confidence Interval.
Commutator Pinion
Calculate an estimate of the population mean difference between penetration for the commutator armature bearing and penetration for the pinion bearing, and do so in a way that conveys information about the reliability and precision of the estimate (NOTE: A normal quantile plot validates the necessary normality assumption).