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The final scores of games of a certain sport were compared against the final point spreads established by odds makers. The difference between the game outcome and point spread (called a point-spread error) was calculated for 220 games. The mean error is x= - 1.5. The population standard deviation of the point-spread error o= 11.3. Use this information to test the hypothesis that the true mean point-spread error for all games differs from 0. Conduct the test at a = 0.01 and interpret the result. Determine the null and alternative hypotheses. Choose the correct answer below. OA. HO: Ho 20 OB. HO: Ho SO Tools Ha: Ho 0 O C. Ho: Ho = 0 OD. Ho: Ho # 0 O Ha: Ho # 0 Ha: Ho = 0 The test statistic Z= (Round to two decimal places as needed.) The p-value = (Round to three decimal places as needed.) What is the appropriate conclusion at a = 0.01? O A. Reject Ho. There is sufficient evidence to conclude that the true mean point-spread error for all games differs from 0. O B. Do not reject Ho. There is insufficient evidence to conclude that the true mean point-spread error for all games differs from 0. Review C. Reject Ho. There is insufficient evidence to conclude that the sample mean point-spread error for all games differs from 0. O D. Do not reject Ho. There is sufficient evidence to conclude that the sample mean point-spread error for all games differs from 0. O