Problem 7.51

# Problem 7.51 - P roblem 7.51 A survey sponsored by the...

This preview shows pages 1–2. Sign up to view the full content.

Problem 7.51 A survey sponsored by the American Dietetic Association and the agribusiness giant conAgra found that 53% of office workers take 30 minutes or less for lunch each day. Approximately 37% take 30 to 60 minutes, and 10% take more than an hour (data extracted from “Snapshots,” www.usatoday.com , April 26, 2006). a. What additional information would you want to know before you accepted the results of the survey? Before accepting the results of the survey, I would want to know the purpose of the survey, why it was conducted, and for whom it was conducted. I would also want to know whether the survey was based on a probability or non-probability sample. Types of non-probability samples are: convenience and judgment. In a convenience sample, items are selected based only on the fact that they are easy, inexpensive, or convenient to sample. In a judgment sample, you get the opinions of pre-selected experts in the subject matter. Types of probability samples are: Simple random,

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 05/26/2011 for the course DS 300 taught by Professor Zhixinlui during the Winter '11 term at University of Michigan-Dearborn.

### Page1 / 2

Problem 7.51 - P roblem 7.51 A survey sponsored by the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online