Question

The scores on an entrance exam to a university are known to have an approximately normal distribution with mean 65% and standard deviation 7.1%. Using the normalcdf function on your graphing calculator, what percentage of students would score 70 or better on this entrance exam?

Answer 1

0.24

Explanation:

`Z=(x-\mu)/(\sigma)`

`=(70-65)/(7.1)`

`=0.704`

P(Z≥0.704) = 0.24