A student scores a -1.5 z score on an exam. What was the standard deviation if they scored a 690 on the exam with a mean 0f 750?

You are a member of this year's track team, and your goal is to win States in the 1600 meters. Your coach converts all the times run in the state to z-scores, and your time is a -1.2. Are you happy or upset with this result, and why? Responses

• Upset, because the negative z score means you are slower than the average 1600-meter runner.
• Yes, because the negative z score means your are faster than the average 1600 meter runner.
• Neither because z scores don't compare results in a meaningful way.