Question

a chemical engineer must report the average volume of a certain pollutant produced by the plants under her supervision. here are the data she has been given by each plant:

what average volume should the chemical engineer report? be sure your answer has the correct number of significant digits.

Explanation:

Step1: Sum the pollutant volumes

$1.4 + 21.2 + 2.8 = 25.4$

Step2: Calculate the average (3 plants)

$\frac{25.4}{3} \approx 8.5$

Step3: Check significant digits

The least precise value has 2 significant digits, so the result should have 2.

Answer:

8.5 L