Answer
The interval constructed in part (l) is larger then the interval constructed in part (j). It is because the interval in part (j) was made for the mean of all diamonds with 0.85 carat, color E, clarity VVS1 and the interval in part (l) for a particular diamond with 0.85 carat, color E, clarity VVS1.
The mean has less variability than an individual.
Work Step by Step
Given above.