scores on the SAT critical reading test in 2013 follow a normal distribution with a mean score of 496 and a standard deviation of 115. what proportion of scores are higher thzn 530? what proportin of scores are between 400 and 500? the highest 10% of scored are higher than a SAT score of?

Answer 1

keep this link handy:

http://davidmlane.com/hyperstat/z_table.html