Question 15

The tar content in 30 samples of cigar tobacco follows:

1.542 1.585 1.532 1.466 1.499 1.611

1.622 1.466 1.546 1.494 1.548 1.626

1.440 1.608 1.520 1.478 1.542 1.511

1.459 1.533 1.532 1.523 1.397 1.487

1.598 1.498 1.600 1.504 1.545 1.558

Find the lower bound on a 99% prediction interval on the tar content for the next observation that will betaken on this particular type of tobacco.

Ans to 2 decimal places.