Answer:
88
Step-by-step explanation:
To calculate the mean of data, we have to add up all of the data and divide by the number of data available.
Let's see how much data is available:
We have: 9 engineering majors, 5 math majors, and 13 business majors
9 + 5 + 13 = 27
The engineering majors have a mean of: 91
math majors: 93
business majors: 84
To solve multiply the number of each major with their designated mean score, add each product, and divide by the total number of students
(9*91) + (5*93) + (13*84) = 2376
2376/27 = 88
