For a certain exam,a score of 58 was 2 standard deviations below mean and a score of 98 was 3 standard deviations above mean.What was the mean score E for the exam?  Choose the correct option.
A) 74	B) 76	C) 78	D) 80	E) 82
A score of 58 was 2 standard deviations below the mean --&gt; 58 = Mean - 2d   A score of 98 was 3 standard deviations above the mean --&gt; 98 = Mean + 3d   Solving above for Mean E= 74.   74nswer: 74.
<result>A</result>
For a certain exam,a score of 58 was 2 standard deviations below mean and a score of 98 was 3 standard deviations above mean.What was the mean score E for the exam?