please help

Ivan is in his first semester at a certain university and is taking a calculus course with a large enrollment. He just took the first midterm exam and is nervous about his score, which was a 57. Among all of the students in the course, the mean of the exam was 83 with a standard deviation of 9. (a) Find the z-score of Ivan's exam score relative to the exam scores among all the students in the course. Round your X 2 answer to two decimal places. z = 1 (b) Fill in the blanks to interpret the z-score of Ivan's exam score. Make sure to express your answer in terms of a positive number of standard deviations. Ivan's exam score was | standard deviations (Choose one) Y the mean exam score among all students in the course