A 95% confidence interval for p the proportion of supermarket customers who do not buy house-brand products at all is calculated as 32%. With a margin of error of E=±4%, z*=1.96 for a 95% C.L. a) The population proportion is b) The unbiased point estimator is e) What sample size is needed for a 95% confidence level (z*=1.96) and margin of error of E=±2% and sample proportion of 32%? Round your answer to the next whole number.
A 95% confidence interval for p the proportion of supermarket customers who do not buy house-brand products at all is calculated as 32%. With a margin of error of E=±4%, z*=1.96 for a 95% C.L. a) The population proportion is b) The unbiased point estimator is e) What sample size is needed for a 95% confidence level (z*=1.96) and margin of error of E=±2% and sample proportion of 32%? Round your answer to the next whole number.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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A 95% confidence interval for p the proportion of supermarket customers who do not buy house-brand products at all is calculated as 32%. With a margin of error of E=±4%, z*=1.96 for a 95% C.L.
a) The population proportion is
b) The unbiased point estimator is
e) What
and sample proportion of 32%? Round your answer to the next whole number.
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