Question

An environmentalist wants to find out the fraction of oil tankers that have spills each month.

Suppose a sample of 1036 tankers is drawn. Of these ships, 777 did not have spills. Using the data, estimate the proportion of oil tankers that had spills. Write your answer as a fraction or a decimal number rounded to three decimal places.

Answer 1

The estimate of the proportion of oil tankers that had spills is 0.25.

Explanation:

Proportion of oil tankers that had spills:

1036 tankers.

777 did not have spills.

So 1036 - 777 = 259 had spills.

The proportion is:

`p = (259)/(1036) = 0.25`

The estimate of the proportion of oil tankers that had spills is 0.25.