Can anyone help me with this problem?
SAT math scores have a bell shaped distribution with a mean of 515 and a standard deviation of 114.
a) what percentage of scores are between 401 and 629?
b) what percentage of scores are less than 401 or greater than 629?\
c) and what percentage of scoresare greater than 743?
I have read this section in my book and I am so confused.
Thank you so much, anyone who may help!!