Task: Question Answering
Input (English): Problem: machine – x produces 50 % of the total output and machine - y produces 75 % of the total output. an average of 9 units out of a 1000 goods manufactured by machine - x and two unit of 500 units produced by machine - x prove to be defective. what is the probability that a unit chosen at random from the total daily output of the factory is defective ?
Options: a. 0.008, b. 0.1, c. 0.12, d. 0.006, e. 0.007
Output (English): d