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Suppose that two certain cars have the following average operating and ownership costs. Average Costs per Mile Operating Ownership Total Car A $0.24 $0.74 $0.98 Car B $0.12 $0.25 $0.37 If you drive 40,000 miles per year, by how much does the total annual expense for Car A exceed that of Car B over eight years? The total annual expense for Car A exceeds that of Car B by $ over eight years. (Round to the nearest dollar as needed.)9. [I6 Points] In a randomly selected sample of 400 registered voters in a community, 140 individuals say that they plan to vote for Candidate Y in the upcoming election. (a) Find the sample proportion planning to vote for Candidate V. (Round your answer to two decimal places.) DETAILS UHSTATS 10.E.027. to (d) Find a 93% to (b) Calculate the standard error of the sample proportion. (Round your answer to three decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? 10. [-19 Points] In a poll, a randomly selected sample of n = 255 U.S. parents was asked how often the television was on when they ate dinner as a family. About 32% of the sample said I'always.'I DETAILS UHSTAT5 10.E.034. (a) Calculate the standard error of the sample proportion. (Round your answer to three decimal places.) (c) Find a 95% confidence interval for the proportion of the registered voter population who plan to vote for Candidate Y. (Round your answers to three decimal places.) confidence interval for the proportion of the registered voter population who plan to vote for Candidate Y. (Round your answers to three decimal places.) MV NOTES ASK VOUR TEACHER MY NOTES ASK YOUR TEACHER (b) Calculate a 95% condence interval that estimates the proportion of US. families with children who always have the television on when they eat dinner as a family. (Round your answers to three decimal places.) to (c) Calculate a 90% confidence to interval for this situation. (Round your answers to three decimal places.) (d) Write a sentence that interprets the condence interval found in part (c). (Round your answers to three decimal places.) We are % condent that the proportion of U.S. ---Select-- V who have the television on while eating dinner is between You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? and [-/5 Points] DETAILS UHSTAT5 12.E.020. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider this quote: "In a recent survey, 60 out of 100 consumers reported that they preferred plastic bags instead of paper bags for their groceries. If there is no difference in the proportions who prefer each type in the population, the chance of such extreme results in a sample of this size is about .03. Because .03 is less than .05, we can conclude that there is a statistically significant difference in preference. " Give a numerical value for each of the following. (a) The p-value. (b) The level of significance, a. c) The sample proportion. (d) The sample size. (e) The null value. You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? Talk to a Tutor