Sample size determination can be a tricky question.  You NEED the equation.  The RIGHT equation.  Review the material in 7.1 first. Determine the sample size needed to estimate a population proportion to within 4 percent of the true proportion at the 90% level of confidence. No information is available about p and q. Determine the sample size needed to estimate a population proportion to within 2 percent of the true proportion at the 95% level of confidence.  Previous research indicates p = 0.61.

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Sample proportion(p^)=0.5 Margin of error(E)=0.002

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: Assume that a sample is used to estimate a population proportion p. Find the margin of error E that…

A: * SOLUTION :-

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Q: 1. Population = 1425, Confidence Confidence of Interval= 95% of Interval= 98%

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