What is the approximate sample size required to estimate the percentage of Americans who have earned a college degree to within 2%, with 95% confidence? Recall: the worst case scenario would assume that p = 0.5 2401

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.34. You would like to be 90% confident that your esimate is within 1.5% of the true population proportion. How large of a sample size is required

When asked, "Do kids regularly carry weapons in your school?" 14,250 students said yes, and 115,331 students said no. With a 95% level of confidence, find the margin of error (MOE) associated with the sample proportions. (Give the answer to one decimal place, if needed.)MOE =  %

For the specified margin of error and confidence​ level, obtain a sample size that will ensure a margin of error of at most the one specified.   margin of error=0.05​;confidence level=95​%

Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. Six years​ ago, 11.1​% of registered births were to teenage mothers. A sociologist believes that the percentage has decreased since then.

What sample size is needed to give a margin of error within +2.5% in estimating a population proportion with 99% confidence? We estimate that the population proportion is about 0.3. Round your answer up to the nearest integer. Sample size = ! %3D