I need help with A, B, and C

Test scores: Scores on a statistics exam had a mean of 78 with a standard deviation of S. Scores on a calculus exam had a mean of 35 with a standard deviation of 12. Part 1 of 3 (a) Compute the coefficient of variation for statistics exam scores. Round the answer to at least two decimal places. X The coefficient of variation for statistics exam scores Is Part 2 of 3 (b) Compute the coefficient of variation for calculus exam scores. Round the answer to at least two decimal places. X 5 The coefficient of variation for calculus exam scores is ] Part: 2 / 3 Part 3 of 3 (c) Which has greater spread relative to their mean, statistics scores or calculus scores? Calculus has greater spread relative to its mean. Statistics