SOLUTION: the mean grade for the class is 73. if exactly half of the students get 6 additional points, by how many points would the mean increase
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Question 245629: the mean grade for the class is 73. if exactly half of the students get 6 additional points, by how many points would the mean increase
Found 2 solutions by edjones, solver91311:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
3
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Let 
represent the number of students. Then 
is half of the students.
If 73 is the mean, then 
is the total number of points scored by the class. If each of half of the class get 6 additional points, then the total points would increase by 
, hence the total number of points would be 
.
If the total points are 
, then the mean must be 
which is 3 greater than the given mean.
John
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