Question

the grades recieved by 300students follow a normal distribution. the mean of the grades is 75% and the standard deviation is 8%.A. how many students recieved a grade greater than 75%? B. how many students recieved a grade higher than 91%?

Answer 1

Correct answers ended up being 6.7% for an A. 100- 93.32= 6.68 round one place 6.7 %

For B it's 93.32 - 69.1463 = 24.17 round one place so 24.2%

Explanation: