Question

In a random sample of 125 highway bridges around the country, 75 were in need of repair.

What is the sample proportion (point estimate) of highway bridges that need repaired? (Only type ONE decimal place)

Answer 1

The sample proportion of highway bridges that need repaired is 0.6.

Explanation:

The sample proportion of highway bridges that need repaired is the number of bridges in need of repair divided by the number of bridges around the country.

In this question:

75 bridges in need of repair, out of 125. So

75/125 = 0.6

The sample proportion of highway bridges that need repaired is 0.6.