A large city with chronic economic problems is considering legalizing casino gambling. The city council wants to estimate the proportion of all adults in the city who favor legalized casino gambling. 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 95% confidence interval?
Answer to relevant QuestionsRefer to Exercise 8.116. Assume that a preliminary sample has shown that 63% of the adults in this city favor legalized casino gambling. How large should the sample size be so that the 95% confidence interval for the ...When one is attempting to determine the required sample size for estimating a population mean, and the information on the population standard deviation is not available, it may be feasible to take a small preliminary sample ...The standard deviation for a population is σ = 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8. a. Make a 90% confidence interval for µ. b. Construct a 95% confidence interval for ...For a population data set, σ = 14.50. a. What should the sample size be for a 98% confidence interval for µ to have a margin of error of estimate equal to 5.50? b. What should the sample size be for a 95% confidence ...A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an area. A random sample of 120 homeowners selected from this area showed that they pay an average of $1575 per month for their ...
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