Answer: 0.0309
Explanation:
Given: In advanced statistics class, there are 20 Statistics majors, 15 Mathematics majors, 10 Computer Science majors, and 5 Electric Engineering majors.
Total = 20+15+10+5 =50
Number of combinations of selecting r things out of n =

The number of ways to choose a sample of 10 put of 50=

Number of ways to choose 5 Statistics majors, 3 Mathematics majors, 2 Computer Science majors, and 0 Electric Engineering majors =

Required probability =

Hence, the required probability = 0.0309