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 474tankers is drawn. Of these ships, 318 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

Answer: The proportion of oil tankers that had spills is
`(156)/(474)` or 0.329.

Explanation:

Since we have given that

Number of tankers is drawn = 474

Number of tankers did not have spills = 318

Number of tankers have spills = 474 - 318 = 156

Proportion of oil tankers that had spills is given by

`(Containing\ spill)/(Total)=(156)/(474)=0.329`

Hence, the proportion of oil tankers that had spills is
`(156)/(474)` or 0.329.