50% males and female are presented in the data. If gender is independent, how many males are expect to answer yes? Explain the answer and fill in the rest of the table 1.
Table 1: expected values
Yes No
Male ____ ____ 100
Female ____ ____ 100
120 80 200
Table 2: observed values
Yes No
Male 30 70 100
Female 90 10 100
120 80 200
Compare Table 1 with Table 2
What is the expected value for Table 1? What is known?