Suppose you physically simulate the random process of rolling a single die. (a) After 10 rolls of the die. you observe a "one" 1 times. What proportion of the rolls resulted in a "one"? (b) After 20 rolls of the die, you observe a "one" 4 times. What proportion of the rolls resulted in a "one"? (a) The proportion was |:|. (Simplify your answer. Do not round.) (b) The proportion was (Simplify your answer. Do not round.)