I have a question that says find the proportion of students who have scores less than 340. Find proportion of students who have scored greater than or equal to 340. to find the proportion of students who have scores less than 340 i found the z score then the number from table A. How do i find the proportion of students who have scores greater than or equal to 340? because when i went to find the z score again, i realized i have the same z score as the first proportion and would therefore get the same value in table A (0.9131), which would not give me a range of proportions.