Improve validity of the results after mailed the survey

Assignment Help Basic Statistics

Reference no: EM131771510

Question: Gastwirth (1988, p. 507) describes a court case in which Bristol-Myers was ordered by the Federal Trade Commission to stop advertising that "twice as many dentists use Ipana [toothpaste] as any other dentifrice" and that more dentists recommended it than any other dentifrice. Bristol-Myers had based its claim on a survey of 10,000 randomly selected dentists from a list of 66,000 subscribers to two dental magazines. They received 1983 responses, with 621 saying they used Ipana and only 258 reporting that they used the second most popular brand. As for the recommendations, 461 respondents recommended Ipana, compared with 195 for the second most popular choice.

a. Specify the sampling frame for this survey, and explain whether you think "using the wrong sampling frame" was a difficulty here, based on what Bristol-Myers was trying to conclude.

b. Of the remaining four "difficulties and disasters in sampling" (other than "using the wrong sampling frame"), which do you think was the most serious in this case? Explain.

c. What could Bristol-Myers have done to improve the validity of the results after it had mailed the 10,000 surveys and received 1983 back? Assume the company kept track of who had responded and who had not.

Reference no: EM131771510

Questions Cloud

Project profitability index and internal rate of return : Investment Required $160,000 Net Present Value: $44, 323 Life of Project in Years: 7 Initial Rate of Return: 18%

Prepare journal entries to record first two interest payment : Hillside issues $3,000,000 of 6%, 15-year bonds dated January 1, 2017, Prepare the journal entries to record the first two interest payments

Why quota sampling is not a good method : Despite his success in 1936, George Gallup failed miserably in trying to predict the winner of the 1948 U.S. presidential election.

Discuss the company estimates that annual revenues : The company estimates that annual revenues and expenses associated with the games

Improve validity of the results after mailed the survey : What could Bristol-Myers have done to improve the validity of the results after it had mailed the 10,000 surveys and received 1983 back?

Educational requirements and professional organizations : Educational Requirements and Professional Organizations for Fraud Examinations and Financial Forensics

List the clients cognitive and behavioral symptoms : Define the client's presenting problem(s) and provide a diagnostic impression.List the client's cognitive and behavioral symptoms.

What is the internal rate of return promised : What is the internal rate of return promised by the new machine to the nearest whole percent

Compute margin of error reported by newsweek : Verify that the margin of error reported by Newsweek is consistent with the rule given in this chapter for finding the approximate margin of error.

User Account

All Pages