SG / Statistics.set.3/1 Previous Problem Problem List Next Problem Statistics.set.3: Problem 1 (1 point) Find the critical z* for a level 70 % confidence interval. z = Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Page generated at 04/13/202 are-math4.yellowww.versio

It is believed that large doses of acetaminophen (the active ingredient in over the counter pain relievers like Tylenol) may cause damage to the liver. A researcher wants to conduct a study to estimate the proportion of acetaminophen users who have liver damage. For participating in this study, he will pay each subject $20 and provide a free medical consultation if the patient has liver damage.   a) If he wants to limit the margin of error of his 95% confidence interval to 1%, what is the minimum amount of money he needs to set aside to pay his subjects?

An epidemiologist wishes to know what proportion of adults living in a large metropolitan area have the hepatitis B virus.  Determine the sample size that would be required to estimate the true proportion to within 0.03.  In a similar metropolitan area, the proportion of adults with the characteristic is reported to be 0.20.  What sample size would be required for a 90% confidence interval?

In 2013, the Pew Research Foundation reported that "48% of U.S. adults report that they live with one or more chronic conditions". However, this value was based on a sample, so it may not be a perfect estimate for the population parameter of interest on its own. The study reported a standard error of about 1.8%, and a normal model may reasonably be used in this setting. Create a 95% confidence interval for the proportion of U.S. adults who live with one or more chronic conditions. Report your answer as a percentage rounded to 3 decimal places: "We are 95% confident that the true proportion of U.S. adults who live with one or more chronic conditions is between_____% and _____%."