Question

an individual stock is selected at random from the portfolio represented by the box - and - whisker plot shown to the right. find the probability that the stock price is (a) less than $22, (b) between $22 and $57, and (c) $34 or more. (a) the probability that the stock price is less than $22 is 0.25. (do not round.) (b) the probability that the stock price is between $22 and $57 is 0.5. (do not round.) (c) the probability that the stock price is $34 or more is □ (do not round.)

Explanation:

Step1: Recall the properties of box - and - whisker plot for probability

In a box - and - whisker plot, the data is divided into four equal parts (quartiles). The total probability is considered as \(1\).

Step2: Analyze the position of \(34\)

The value \(34\) is the median (second quartile). The third and fourth quartiles (the part of the data from the median to the maximum) represent half of the data.

Answer:

\(0.5\)