About 15.87% of people have an IQ over 115.
z=(115-100)/15=1
Z-score of 1 on a normal distribution means 84.13% have an IQ below 115 and 15.87% have an IQ above 115.
IQ Graph
http://8.17.172.75/uiq/images/bellcurve.gif
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Seventy percent of the population score in that range. Normal is considered anything from 90 to 110.
21 Answer: 85 to 115.
Two percent
No
68% of all people.