SOLUTION: The educational level and the social activity of a sample of executives follow. Education Social Activity=Above Average College = 30 High School = 20 Grade

Algebra ->  Probability-and-statistics -> SOLUTION: The educational level and the social activity of a sample of executives follow. Education Social Activity=Above Average College = 30 High School = 20 Grade      Log On


   

Question 175517: The educational level and the social activity of a sample of executives follow.

Education Social Activity=Above Average
College = 30
High School = 20
Grade School = 10

Education Social Activity = Average
College = 20
High School = 40
Grade School = 50

Education Social Activity=Below Average
College = 10
High School = 90
Grade School = 130

What does the expected frequency for the "above average" social activity and "high school" education equal?
A) 9.50
B) 60.00
C) 22.50
D) 28.50
E) None of the above
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Expected value = ](row total)/(grand total)] = 22.5
--------
Ans: C
===========
Cheers,
Stan H.