Try the fastest way to create flashcards
Question

# A utility company sends surveys to $200$ of its customers in such a way that $100$ surveys are sent to customers who pay their bills on time, $50$ surveys are sent to customers whose bills are less than $30$ days late, and $50$ surveys are sent to customers whose bills are more than $30$ days late. Which type of sample does this represent?

Solution

Verified
Step 1
1 of 2

Stratified sampling is a sampling method that includes dividing the population into groups where they have the same characteristics, like gender. Then, they will pick samples from all of the groups to represent the population. Since the company grouped the customers depending on how they pay their bills then selected a sample from each group, the sampling method that they used is stratified sampling.

## Recommended textbook solutions

#### Probability and Statistics for Engineers and Scientists

9th EditionISBN: 9780321629111 (4 more)Keying E. Ye, Raymond H. Myers, Ronald E. Walpole, Sharon L. Myers
1,204 solutions

#### Elementary Statistics

3rd EditionISBN: 9781259969454Barry Monk, William Navidi
2,711 solutions

#### The Practice of Statistics for the AP Exam

5th EditionISBN: 9781464108730Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor
2,433 solutions

#### Statistics and Probability with Applications

3rd EditionISBN: 9781464122163Daren S. Starnes, Josh Tabor
2,555 solutions