A polling company split a random sample in half and asked 441 respondents the question, "Generally speaking, do you believe the death penalty is applied fairly or unfairly in this country today?" The pollsters asked the other 441 respondents the question, "Generally speaking, do you believe the death penalty is applied unfairly or fairly in this country today?" This seems like the same question, but sometimes the order of the choices matter. Of those asked the rst question, 54% said they thought the death penalty was fairly applied. Of those asked the second question, 61% said the same thing. Complete parts a through 0 below. b) If one combines the 2 groups, considering the overall group to be 1 larger random sample of 882 respondents, what is a 95% condence interval for the proportion of the general public that thinks the death penalty is being fairly applied? (mg) (Round to two decimal places as needed.) An insurance company checks police records on 583 accidents selected at random and notes that teenagers were at the wheel in 95 of them. Complete parts a) through d). a) Construct the 95% condence interval for the percentage of all auto accidents that involve teenage drivers. 95% CI = (D%E|%) (Round to one decimal place as needed.) Direct mail advertisers send solicitations ("junk mail") to thousands of potential customers in the hope that some will buy the company's product. The response rate is usually quite low. Suppose a company wants to test the response to a new yer and sends it to 1120 people randomly selected from their mailing list of over 200,000 people. They get orders from 121 of the recipients. Use this information to complete parts a through d. a) Create a 95% confidence interval for the percentage of people the company contacts who may buy something. (DADA) (Round to one decimal place as needed.) A reproductive clinic reported 46 live births to 201 women under the age of 40 who had previously been unable to conceive. Complete parts a through d below. Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a) Find a 90% confidence interval for the success rate at this clinic. The confidence interval is approximately (, (Round to three decimal places as needed.)Some food retailers propose subjecting food to a low level of radiation in order to improve safety, but sale of such "irradiated" food is opposed by many people. Suppose a grocer wants to nd out what his customers think. He has cashiers distribute surveys at checkout and ask customers to ll them out and drop them in a box near the front door. He gets responses from 111 customers, of whom 81 oppose the radiation treatments. What can the grocer conclude about the opinions of all his customers? Choose the correct answer below, lling in any input boxes as necessary. O A- The grocer can conclude, with 95% condence, that the proportion of all his customers that oppose "irradiated" food falls in the interval ( (Round to four decimal places as needed. Use ascending order.) B. Probably nothing, because the grocer's poll does not meet the 10% Condition. 0 c. Probably nothing, because those who bothered to ll out the survey may be a biased sample. O D. Probably nothing, because the grocer's poll does not meet the Success/Failure Condition
