For a certain exam,a score of 42 was 5 standard deviations below mean and a score of 67 was 2.5 standard deviations above mean.What was the mean score for the exam?
Choose the correct choice from the following options
A) 74
B) 76
C) 78
D) 58.67
E) 82.2
Mean-5SD=42   Mean+2.5SD=67   By solving above equations we get,   SD (absolute value)=3.33   Mean=58.67   ANS. 58.67
<result>D</result>
For a certain exam,a score of 42 was 5 standard deviations below mean and a score of 67 was 2.5 standard deviations above mean.What was the mean score for the exam?