Question

Samples consisting of 10 fish caught in a lake and the concentration of PCB (chemicals that pollute the lake) are measured using certain techniques. The measurement results in micromiles are:

11,5    10,8     11,6      9,4   12,4     11,4     12,2    11    10,6      10,8

With a confidence coefficient of 0.95, determine the interval / interval estimator for the average for pollution in the lake.

Answer 1