What the required sample size should be in the case

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Reference no: EM133481957

Problem

Consider a customer survey in the formal stage, and decide whether you would use a personal survey, telephone survey, or self-administered survey (mail, e-mail, or online). Give reasons for your choice of contact method and describe the survey process. In your chosen method, what are the major error sources? And what is your sampling design?

A. Contact method, sampling method and survey process, and the reasons for your choice.

B. According to a previous consumer survey, nearly 16 percent of the respondents claim awareness to drip coffee. You wish to estimate with 95% confidence (Z=1.96) that the allowance for sampling error will not greater than 4%. What the required sample size should be in this case?

C. Figure out at least three sources of research error and the approaches to minimize these errors respectively.

Reference no: EM133481957

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