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The IQ of 300 applicants to a certain college are approximately normally distributed with mean 115 
and standard deviaion 112. if college required atleast 95,then the number of students those will be rejected 
on this basis regardless of their other qualifications are ?
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The numerical values in your post are absolutely unrealistic (to such degree that they make people laugh).
For your info, and to give you an idea about typical IQ values
     One of the most widely used tests today is the Wechsler Adult Intelligence Scale, which has 
     a mean IQ of 100 and a standard deviation of 15. A score of 100 indicates that a person's intelligence is average.