A national poll asked, “how would you describe your job situation now compared to before the Covid-19 outbreak??” The results showed that 24% of workers in the U.S. report having a worse job situation now compared to before the COVID-19 outbreak began with a margin of error of 1.8%. (a) Assume the margin of error is reported for a 95% confidence interval, use this information to calculate a 95% confidence interval for the population proportion of persons who have a worse job situation now compared to before the outbreak. (b) Based on the calculated confidence interval, is there evidence that at least 1 out of every 4 (25%) Americans have a worse job situation not compared to before the outbreak? Explain why briefly. (c) What was the sample size of this poll?
A national poll asked, “how would you describe your job situation now compared to before the Covid-19 outbreak??” The results showed that 24% of workers in the U.S. report having a worse job situation now compared to before the COVID-19 outbreak began with a margin of error of 1.8%.
(a) Assume the margin of error is reported for a 95% confidence interval, use this information to calculate a 95% confidence interval for the population proportion of persons who have a worse job situation now compared to before the outbreak.
(b) Based on the calculated confidence interval, is there evidence that at least 1 out of every 4 (25%) Americans have a worse job situation not compared to before the outbreak? Explain why briefly.
(c) What was the
(d) If you wanted a 99% confidence interval for the same study, would your margin of error be greater than, equal to, or less than 1.8%?
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