In a normal distribution what percent of observations fallbetween the mean and o

In a normal distribution what percent of observations fallbetween the mean and one standard deviation? In a normaldistribution 95% of the data is located between the mean and howmany standard deviations? In a normal distribution of 2216observations how many observations fall within one standarddeviation of the mean? What may be said of observations that fallbeyond three standard deviations?