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 1453 tankers is drawn. Of these ships, 1018 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

p = 0.299

Explanation:

A proportion is the number of desired outcomes divided by the number of total outcomes.

Desired outcomes:

We want to estimate the proportion of oil tankers that had spills. Of the 1453, 1018 did not have spills, and 1453 - 1018 = 435 had. So
`D = 435`

Total outcomes:

All the 1453 tankers, so
`T = 1453`

Estimating the proportion

`p = (D)/(T) = (435)/(1453) = 0.299`