Question

An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 1 of 2 : Suppose a sample of 779 tankers is drawn. Of these ships, 600 did not have spills. Using the data, estimate the proportion of oil tankers that had spills. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Answer 1

The estimation for the proportion of oil tankers that had spills is 0.23.

Explanation:

The estiamate of the proportion of oil tankers that had spills is the number of oil tankers in the sample with spills divided by the total number of oil tankers.

In this problem, we have that:

779 tankers in the sample.

600 without spills, and 779 - 600 = 179 with spills

179/779 = 0.23

The estimation for the proportion of oil tankers that had spills is 0.23.