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How large a sample should be taken in the given case

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Reference no: EM131680020

Question: Refer to Problem. Assume that a preliminary study has shown that 70% of the students surveyed at this college are dissatisfied with the current online registration system. How large a sample should be taken in this case so that the margin of error is within .05 of the population proportion for a 90% confidence interval?

Problem: A college registrar has received numerous complaints about the online registration procedure at her college, alleging that the system is slow, confusing, and error prone. She wants to estimate the proportion of all students at this college who are dissatisfied with the online registration procedure. What is the most conservative estimate of the sample size that would limit the margin of error to be within .05 of the population proportion for a 90% confidence interval?

Reference no: EM131680020

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