Question 1
A population proportion is to be estimated from the sample described. Approximate the margin of error for the 95% confidence interval. Round your answer to four decimal places, if necessary.
Sample size = 1600, sample proportion = 0.93
◦ 0.009
◦ 0.0128
◦ 0.0003
◦ 0.0064
Question 2
A population proportion is to be estimated from the sample described. Approximate the margin of error for the 95% confidence interval. Round your answer to four decimal places, if necessary.
A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 550 college students showed that 22% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval.
◦ 0.025
◦ 0.0353
◦ 0.0177
◦ 0.0015