SOLUTION: The scores on a test are normally distributed with the mean of 150 and a standard deviation of 30. What is the score that is 1/2 standard mediation above the mean?

Algebra ->  Probability-and-statistics -> SOLUTION: The scores on a test are normally distributed with the mean of 150 and a standard deviation of 30. What is the score that is 1/2 standard mediation above the mean?       Log On

 

Hi



 mean of 150 and a standard deviation of 30. 

*Note:   | z = .5

   .5 = (x-150)/30 

     x = .5*30 + 150

     x = 165