Cheating spouses and bias In a survey conducted by vouchercloud.net and reported in the Palm Beach Post, it was found that of 2645 people who had participated in an extramarital affair, the average amount spent per month on the affair was $444. (Source: http://www.palmbeachpost.com/news/

news/cheating-spouses-spend-444-month-affair-survey-fin/

ngbgy/?__federated=1)

a. No information was given on how the surveyed individuals were selected. What type of bias could result if the 2645 individuals were not randomly selected?

How would this type of bias potentially affect the responses and the sample mean amount spent per month on the affair?

b. The concern was raised in the article that the individuals’

answers could not be validated. What type of result from untruthful answers? How would this type of bias affect the responses and the sample mean amount spent per month on the affair?