# Question: Three nationwide poll results are described below Each of the

Three nationwide poll results are described below. Each of the polls is based on approximately 1005 randomly selected adults.

a. Calculate the 95% confidence maximum error of estimate for the true binomial proportion based on binomial experiments with the same sample size and observed proportion as listed first in each article.

b. Explain what caused the values of the maximum errors to vary.

c. The margin of error being reported is typically the value of the maximum error rounded to the next larger whole percentage. Do your results in part a verify this?

d. Explain why the round-up practice is considered “conservative.”

e. What value of p should be used to calculate the standard error if the most conservative margin of error is desired?

a. Calculate the 95% confidence maximum error of estimate for the true binomial proportion based on binomial experiments with the same sample size and observed proportion as listed first in each article.

b. Explain what caused the values of the maximum errors to vary.

c. The margin of error being reported is typically the value of the maximum error rounded to the next larger whole percentage. Do your results in part a verify this?

d. Explain why the round-up practice is considered “conservative.”

e. What value of p should be used to calculate the standard error if the most conservative margin of error is desired?

## Answer to relevant Questions

a. If x successes result from a binomial experiment with n = 1000 and p = P(success) and the 95% confidence interval for the true probability of success is determined, what is the maximum value possible for the “maximum ...Find the sample size n needed for a 95% interval estimate in Example Calculate the test statistic z used in testing the following: a. Ho: p = 0.70 Ha: p > 0.70 with the sample n = 300 and x = 224 b. Ho: p = 0.50 Ha: p < 0.50 with the sample n = 450 and x = 207 c. Ho: p = 0.35 vs Ha: p ...Two randomly selected groups of citizens were exposed to different media campaigns that dealt with the image of a political candidate. One week later, the citizen groups were surveyed to see whether they would vote for the ...A study is being designed to determine the reasons why adults choose to follow a healthy diet plan.The study will survey 1000 men and 1000 women. Upon completion of the study, the reasons men choose a healthy diet will be ...Post your question