statisticsnormal distribution
posted by mary can someone please solve,lost .
a set of data is normally distributed with a mean of 500 and a standard deviation of 100.
a) what would the standard score fora score of 700 be?
b) what % of scores is between 500 and 700?
c) what would the percentile rank for a score of 700?

please show calculations for ac. want to compare calculations. thank you.
mary 
Suppose that IQ scores have a bellshaped distribution with a mean of 96 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are between 79 and 113?