A11 Question 15, 10.CE.75-T
Question 16, 10.CE.76-T
Question 17, 10.CE.79-T
An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 2% and 95% confidence. To gauge the size of the problem, the agency first picks 40 cars and finds 4 with faulty emissions systems. How many should be sampled for a full investigation? The environmental agency should sample at least vehicles. (Round up to the nearest whole number.) O An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 2% and 95% confidence. To gauge the size of the problem, the agency first picks 40 cars and finds 4 with faulty emissions systems. How many should be sampled for a full investigation? The environmental agency should sample at least vehicles. (Round up to the nearest whole number.) O The data set in the accompanying table contains last month's credit card purchases of 100 customers randomly chosen from a segment of a major credit card issuer. The marketing department is considering a special offer for customers who spend more than $1000 per month on their card. From these data construct a 98% confidence interval for the proportion of customers in this segment who will qualify. Click the icon to view the data table. What is the confidence interval? Select the correct choice below and, if necessary, fill in the answer boxes within your choice. OA. The 98% confidence interval is (%, %). (Round to one decimal place as needed. Use ascending order.) OB. The conditions of a confidence interval are not satisfied. Help me solve this View an example Get more help. Credit Card Purchase Amounts 28.38 64.64 57.01 Credit Card Purchase Amounts ($) 750.02 1134.55 138.11 56.15 879.86 1039.78 911.65 1052.28 1021.75 83.58 185.41 340.77 435.80 424.81 1145.07 63.84 1044.69 72.03 13.59 1015.88 14.09 637.89 097.69 473.99 57.36 324.22 311.29 563.67 1019.60 31:30 024.22 225.47 72.89 462.55 62.74 114.85 496.34 468.44 394.51 ver www.w 148.94 56.65 648.66 838.84 1127.31 172.27 376.51 48.62 61.06 194.82 47.35 53.77 588.61 22.81 36.05 31.45 373.52 1162.74 1045.38 1060.18 583.09 273.11 267.88 220.24 317.79 42.04 59.45 48.12 53.53 356.17 5.28 777.17 www 887.21 Full data set D - X Clear all Check answer An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 2% and 95% confidence. To gauge the size of the problem, the agency first picks 40 cars and finds 4 with faulty emissions systems. How many should be sampled for a full investigation? The environmental agency should sample at least vehicles. (Round up to the nearest whole number.) O An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 2% and 95% confidence. To gauge the size of the problem, the agency first picks 40 cars and finds 4 with faulty emissions systems. How many should be sampled for a full investigation? The environmental agency should sample at least vehicles. (Round up to the nearest whole number.) O The data set in the accompanying table contains last month's credit card purchases of 100 customers randomly chosen from a segment of a major credit card issuer. The marketing department is considering a special offer for customers who spend more than $1000 per month on their card. From these data construct a 98% confidence interval for the proportion of customers in this segment who will qualify. Click the icon to view the data table. What is the confidence interval? Select the correct choice below and, if necessary, fill in the answer boxes within your choice. OA. The 98% confidence interval is (%, %). (Round to one decimal place as needed. Use ascending order.) OB. The conditions of a confidence interval are not satisfied. Help me solve this View an example Get more help. Credit Card Purchase Amounts 28.38 64.64 57.01 Credit Card Purchase Amounts ($) 750.02 1134.55 138.11 56.15 879.86 1039.78 911.65 1052.28 1021.75 83.58 185.41 340.77 435.80 424.81 1145.07 63.84 1044.69 72.03 13.59 1015.88 14.09 637.89 097.69 473.99 57.36 324.22 311.29 563.67 1019.60 31:30 024.22 225.47 72.89 462.55 62.74 114.85 496.34 468.44 394.51 ver www.w 148.94 56.65 648.66 838.84 1127.31 172.27 376.51 48.62 61.06 194.82 47.35 53.77 588.61 22.81 36.05 31.45 373.52 1162.74 1045.38 1060.18 583.09 273.11 267.88 220.24 317.79 42.04 59.45 48.12 53.53 356.17 5.28 777.17 www 887.21 Full data set D - X Clear all Check
