SOLUTION: An instructor has graded 28 exam papers submitted by students in a class of 29 students, and the average so far is 69. (The maximum possible score is 100.) How high would the score
Algebra ->
Probability-and-statistics
-> SOLUTION: An instructor has graded 28 exam papers submitted by students in a class of 29 students, and the average so far is 69. (The maximum possible score is 100.) How high would the score
Log On
Question 712781: An instructor has graded 28 exam papers submitted by students in a class of 29 students, and the average so far is 69. (The maximum possible score is 100.) How high would the score on the last paper have to be to raise the class average by 1 point? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! An instructor has graded 28 exam papers submitted by students in a class of 29 students, and the average so far is 69. (The maximum possible score is 100.) How high would the score on the last paper have to be to raise the class average by 1 point?
---------
Point total for the 29 = 29*69 = 2001
-----
Points needed for the 30 to have an average of 70: 30*70 = 2100
------
Points needed on the 30th paper: 2100-1001 = 99
-------------------------------------------------------
Cheers,
Stan H.
(