Question: You need to undertake a face-to-face interview survey of managing directors of small- to medium-sized organizations. From the data you collect, you need to be able to generalize about the attitudes of the managing directors toward changes of government policy within their firms. Your generalizations need to be accurate to within 5%. Unfortunately, you have limited resources to pay for interviews, traveling, and other associated expenses.

1. How many managing directors will you need to interview?