Posted by Susana on .
Mrs. Marble gave her 5th grade class a math test. The scores reflect a relatively normal distribution. The mean score for the group was 80 with a standard deviation of 8. Based upon this information, answer the following questions:
Bobby scored exactly two standard deviations above the mean. What was Bobby’s score on the test? __ ___

Statistics 
bobpursley,
I bet he scored 80+2*8=96

Statistics 
Anonymous,
z = (xu)/S
2 = (x80)/8
16 = (x80)
x=96