An individual stock is selected at O random from the portfolio represented by the box-and-whisker plot shown to the right. Find the probability that the stock price is (a) 13 21 34 56 97 X less than $21, (b) between $21 and $56, and (c) $34 or more. 10 20 30 40 50 60 70 80 90 100 (a) The probability that the stock price is less than $21 is (Do not round.)