A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. From the 28 tires surveyed, the mean lifespan was 46,500 miles. What is the decision you should make regarding the hypothesis? O A. Reject the null B. Do not reject the null O C. No decision can be made QUESTION 6 The cost of a daily newspaper varies from city to city. However, the variation among prices remains steady with a standard deviation of 204. A study was done to test the claim that the mean cost of a daily newspaper is $1.00. Twelve costs yield a mean cost of 954 with a standard deviation of 18c. What are the null and alternative hyptheses? OA. Ho: H = 1 OB. Ho: H = 1 OC. Ho: H 1 Ha:H