3. [-/5 Points] DETAILS BELLOCONMATH10 12.4.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A psychology teacher gave an objective-type test to a class of 400 students and, after seeing the results, decided that the scores were normally distributed. The mean score was 54, and the standard deviation was 13. The teacher assigned a grade of A to all scores of 80 or over, B to scores of 67 to 79, C to scores of 41 to 66, D to scores of 28 to 40 and F to scores below 28. About how many of each grade did the teacher assign? (Round your answers to the nearest whole number. Due to rounding, values may not add to the given sum. Recall that 34% of z-scores lie between 0 and 1, 13.5% lie between 1 and 2, and 2.5% are greater than 2.) A B Need Help? Watch It Additional Materials