7. Triple A Auto Club claims that the average miles a year driven by all americans is 14,500 miles. The Auto Club of California feels that is too low for Californians. The auto club samples 51 drivers. The sample mean for those drivers was 15,500 with a standard deviation of 2300 miles. Test the claim at a .05 significance level that the average miles a year driven by Californians is more than 14,500 miles. Ho H: Graph of the critical information: Test Statistic: Conclusion based on Ho : s Hing based nolaylarod Conclusion based on the problem: moldon all no bound nothularod There sufficient evidence at the significance level to the claim that8. Consumer reports claims that the average selling price for all 2019 Honda Civics is $ 15,950. A random sample of 31 2011 Honda Civics sold in the San Francisco bay area found an average selling price of $ 15,000 with a standard deviation of $ 2,500. Test the claim at a . 10 significance level that the average selling price for 2019 Honda Civics in the San Francisco bay area area is less than $ 15,950. Ho Graph of the critical information: Test Statistic: Conclusion based on Ho : Conclusion based on the problem: There sufficient evidence at the significance level to the claim that9. AT&T reports that the average cell phone account sends 470 text messages per month. Teachers at FLC thinks that number is not true for their students. The teachers take a random sample of 37 FLC students and find that the average number of text messages sent per month was 350 with a standard deviation of 190 messages. Test the claim at a .01 significance level that the average number of text messages sent per month is not equal to 470 messages. Ho Graph of the critical information: Test Statistic: Conclusion based on Ho : Conclusion based on the problem: There sufficient evidence at the significance level to the claim that10. Sacramento coffee drinkers claim that the 10 ounce cups of coffee sold there have an average of 2.1 ounces of caffeine in them. A study was conducted by Folgers. The average amount of caffeine found in 61 samples of 10 ounce cups of Sacramento coffee was 2.2 ounces with a standard deviation of .40 ounces. Test the claim at a .01 significance level that the 10 ounce cups of coffee sold there have more than 2.1 ounces of caffeine in them. Ho Graph of the critical information: Test Statistic: per bono Conclusion based on Ho : Conclusion based on the problem: There sufficient evidence at the significance level to the claim that11. Kaiser Hospitals states that the average hourly wage for nurses in Sacramento is $ 40 an hour. A study of the hourly wage was conducted by local nurses. The average hourly wage for 46 nurses in Sacramento was found to be $ 39 with a standard deviation of $ 3.25. Test the claim at a .05 significance level that the average hourly wage for nurses in Sacramento is less than $ 40 an hour. Ho Graph of the critical information: Test Statistic: Conclusion based on Ho : Conclusion based on the problem: There sufficient evidence at the significance level to the claim that12. A nation health club journal states that the average time spent per visit at a health club is 52 minutes a visit. A local health club feels that their clients spend less then 52 minutes per visit. A random sample of 51 Folsom customers resulted in an average time spent per visit of 49.3 minutes with a standard deviation of 9.5 minutes. Test the claim at a .01 significance level that the average time spent per visit at a health club is less than 52 minutes a visit. Ho Graph of the critical information: Test Statistic: Conclusion based on Ho : Conclusion based on the problem: There sufficient evidence at the significance level to the claim that