Question

Hello, can you help me with a Standard deviation question, please?

Answer 1

To now how many had a score under 66, we have to calculate the following probability

`P(X<66)=P(Z<(66-81)/(5))=P(Z<-3)=0.0013`

So the amount of people that had a score under 66 is

`4502\cdot0.0013=5.86\approx6`

So 6 people get a score under 66