Answer:
89.84375
Step-by-step explanation:
Given that on a finance exam, 15 accounting majors had an average grade of 90. On the same exam, 7 marketing majors averaged 85, and 10 finance majors averaged 93.
To find weighted mean.
Here weights can be considered as number of majors in each subject
[tex]Marks x 90 85 93\\Weights 15 7 10\\Product 1350 595 930\\[/tex]
Weighted total = 1350+595+930 = 2875
Weighted mean = weighted total/total students
[tex]=\frac{2875}{32} =89.84375[/tex]
