Question 4 > Zheng scored 83 in the class with the mean 78 and the standard deviation 5.7, but Bill scored 62 in the class with the mean 54.1 and the standard deviation 9.5. Who scored relatively better? (Round the answers to 2 decimal places) Zheng's z-score is and Bill's z-score is score is Select an answer Bill's z-score, we conclude that Select an answer . Since Zheng's z- Question Help: Video Written Example Message instructor Post to forum Submit Question Jump to Answer Question 5 < The most recent exam scores have a mean of 70 and a standard deviation of 5.7. The z-score of Stephanie's test score is -1.5. What is her test score? (Round the answer to 2 decimal places) Question Help: Video Written Example Message instructor Post to forum Submit Question Jump to Answer