in 1995, SAT math scores werenormally distributed with mean 500 and standard deviation 100 points.

Question

What percent of students scored greater than 410?

Answer 1

z = (x-μ)/σ = (410-500)/100 = -0.9

From z table, we can get the p-value =0.1841

So the right tail p-value is 1-0.1841=0.8159

so 81.59%.