Hour Exam 2 56mins X Progress Score: 0/25 0/12 answered Question 8 A number of studies indicate that, among people who hold airline tickets, about 9% do not show up for their flights. The manager at Kingfisher Airlines wants to conduct a study to determine this number with more precision. Specifically, he wants to construct a 95% confidence interval for the proportion of airline ticket holders who fail to show up for their flights, and he wants the margin of error to be at most 0.8%. How big a sample size should he use? Answer: The minimum sample size is people. Submit Question 80 O DII DD .O F3 E5 E6 F7 F8 F9 # % & N 4 5 6 7 9 Q W E R Y U 0 A S D F G H C KCourse Calendar | Gradebook Home > MAT 161 WB1 Spring 2022 > Assessment Hour Exam 2 56mins X. Progress save Score: 0/25 0/12 answered Question 6 Next Scores on the Scholarly Outcomes Test have a mean of 610 and a standard deviation of 64. Find the probability that the mean score in a random sample of 110 SOT test-takers will be less than 605. Round your answer to four decimal places. Answer: The probability is Submit Question :9 S DII DD F1 F2 F3 E6 F7 F 8 F9 @ % A & T 8 N 5 9 Q W E R Y U O A S D F G H C KHome > MAT 161 WB1 Spring 2022 > Assessment Hour Exam 2 56mins X Progress Score: 0/25 0/12 answered Question 7 The weights of the oranges from Arnie's Orange Grove are normally distributed with a mean of 9.3 ounces and a standard deviation of 1.2 ounces. The oranges are sold in boxes of twelve oranges each, and each box may be considered a random sample. What total weight separates the lightest 30 percent of all the boxes of Arnie's oranges from the rest? Round your answer to the nearest tenth of an ounce. Answer: ounces. Submit Question 80 DII DD F2 F3 F4 E5 E6 F7 F8 F9 F1 % & # N 4 5 8 9 Q W E R T Y U O A S D F G H KHour Exam 2 56mins X. Progress Score: 0/25 0/12 answered Question 9 In a pre-election poll of 1770 voters in Statsburgh, 1080 said they would vote in favor of a Statsburgh Park Restoration Project. Construct a 90%% confidence interval for the percentage of all Statsburgh voters who would vote in favor of the project. Give your answers as percentages, and round to the nearest tenth of a percent. Answer: We are 90% confident that between % and % of all Statsburgh voters plan to vote in favor of the project. Submit Question 20 DII DD F3 E5 F7 F8 F9 a # $ % A & N 3 4 6 8 9 O Q W E R Y U O 4 S D F H C K