You are to conduct a sample survey to determine the mean family income in a rural area of central Florida.
Not what you're looking for?
You are to conduct a sample survey to determine the mean family income in a rural area of central Florida. The question is, how many families should be sampled? In a pilot sample of 10 families, the standard deviation of the sample was $500. The sponsor of the survey wants you to use the 95 percent confidence level. The estimate is to be within $100. How many families should be interviewed?
Purchase this Solution
Solution Summary
The mean family income in a rural area of central Florida is determined. Statistics in a survey is examined.
Solution Preview
SD =500
CI level = 95%
Since the half range of the CI = z*SE
and z(0.975) ...
Purchase this Solution
Free BrainMass Quizzes
MS Word 2010-Tricky Features
These questions are based on features of the previous word versions that were easy to figure out, but now seem more hidden to me.
Marketing Research and Forecasting
The following quiz will assess your ability to identify steps in the marketing research process. Understanding this information will provide fundamental knowledge related to marketing research.
Academic Reading and Writing: Critical Thinking
Importance of Critical Thinking
Writing Business Plans
This quiz will test your understanding of how to write good business plans, the usual components of a good plan, purposes, terms, and writing style tips.
Accounting: Statement of Cash flows
This quiz tests your knowledge of the components of the statements of cash flows and the methods used to determine cash flows.