For a certain exam,a score of 60 was 2 standard deviations below mean and a score of 100 was 3 standard deviations above mean.What was the mean score for the exam?	Choose the correct choice from the following answers
A) 74	B) 76	C) 78	D) 80	E) 82
Mean-2SD=60   Mean+3SD=100   by solving above we get,   SD (absolute value)=8   Mean=76   Ans. 76
<result>B</result>
For a certain exam,a score of 60 was 2 standard deviations below mean and a score of 100 was 3 standard deviations above mean.What was the mean score for the exam?