Answer:
0.5085
Step-by-step explanation:
Given that an office has 30 computers. Seventeen of the 30 are Macintosh, and the remaining thirteen are windows.
When two computers are randomly selected without replacement
no of ways of selection = [tex]60C2 = 1770[/tex]
No of ways of selecting one window and one Mac = [tex]30C1(30C1) = 900[/tex]
Prob that the sample contains exactly one windows machine and exactly one Macintosh=[tex]\frac{900}{1770} =0.5085[/tex]
