On a test that has a normal distribution, a score of 32 falls two standard deviations above the mean, and a score of 2 falls three standard deviations below the mean. Determine the mean of this test

I'm just guessing, but my answer would c. 0 to 300.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,