How much population falls between median and median plus one standard deviation in a normal distribution ?

NORMAL DISTRIBUTION Shape is bilaterally symmetrical Mean = Median = Mode (coincide) 50% of all values lie above Mean (or Median or Mode) Mean + 1SD cover 68% values (Mean + 1SD cover 34% values) Mean + 2SD cover 95% values (Mean + 2SD cover 47.5% values) Mean + 3SD cover 99% values (Mean + 3SD cover 49.5% values)