Question: A survey was designed to study how business operations vary according to their size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires in a survey of this type are returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the following two-way table:
Which of the following conclusions seems to be supported by the data?
(a) There are more small companies than large companies in the survey.
(b) Small companies appear to have a higher response rate than medium or big companies.
(c) Exactly the same number of companies responded as didn't respond.
(d) Overall, more than half of companies responded to the survey.
(e) If we combined the medium and large companies, then their response rate would be equal to that of the small companies.