Question 18 Question 17

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 of an interval that will contain 99% of the values of the tar content with 95% confidence.

Ans to 2 decimal places.