10:42 X a Final Exam Review Questions(s... courselneroLom E E Find study resources 2. A poll of 100 randomly selected car owners revealed that the mean length of time that they plan to keep their cars is 6.25 years. It is known from the previous research that the population standard deviation is 2.75 years. The president of the Kamloops Car Park is trying to plan a sales campaign targeted at car owners who are ready to buy a different car. Test the claim of the sales manager, who authoritatively states that the mean length of time all car owners plan to keep their cars idess than 7 yearsUsezdistIibutjon and a 0.02 signicance level. Final Exam Review STAT 5002 Questions 2 3. A nighttime cold medicine bears a label indicating the presence of 800 mg of acetaminophen in each uid ounce of the drug. Suppose that Health Canada randomly selected 96 oneounce samples and found that the mean acetaminophen content was 779 mg, and the standard deviatic was 41 mg. Using 001 significance level, test the claim of the pharmaceutical company that the population meais equal t0800 mg. Would you buy this cold medicine? Test the claim using 1% signicance level anilldistribution. 2 questions left to ask u Add Course Hero: Homework Answers & Helper to Home screen