A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68% of the distribution lies one standard deviation h of the mean, what percent of the distribution is less than m+h?
Pick.
A) 16%  B) 32%  C) 48%  D) 84%  E) 92%
16%   ________________________________________________ m+h   34%   ________________________________________________ m   34%   ________________________________________________ m-h   16%   since 68% lies one standard deviation from mean m, =&gt; 50% of 68% lies on either side as it is symmetric about m.   thus 16% lie below m-h and 16% lie above m+h   now below m+h = 16+34+34= 
<gadget id="calculator">16+34+34</gadget>
<output>84</output>
84%   hence 84%
<result>D</result>
A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68% of the distribution lies one standard deviation h of the mean, what percent of the distribution is less than m+h?