Mr. Sanderson marks his class on a normal curve. Those with z-scores above 2.1 will receive an A, those between 2.1 and 0.9 will receive a B, those between 0.9 and negative 1.1 will receive a C, those between negative 1.1 and negative 2.3 will receive a D, and those under negative 2.3 will receive an F. Determine the percent of grades that will be A, B, C, D, and F.

Part 1 1.79% of the grades are A's. (Round to two decimal places as needed.)

Part 2 16.62% of grades are B's. (Round to two decimal places as needed.)

Part 3 select: 68.02 68.02% of grades are C's. (Round to two decimal places as needed.)

Part 4 12.5% of grades are D's. (Round to two decimal places as needed.)

Part 5 enter your response here% of grades are F's. (Round to two decimal places as needed.)