At a Sawmill in Oregon,a Process Improvement Team Measured the Diameters

question 74

Multiple Choice

At a sawmill in Oregon,a process improvement team measured the diameters for a sample of 1,500 logs.The following summary statistics were computed: Q1 = 8.9 in.Q2 = 13.5 in.Q3 = 15.6 in in.
Given this information,for a box and whisker plot which of the following statements is appropriate?

• A)Seventy-five percent of the trees in the sample have values between 8.9 in.and 15.6 in.
• B)Virtually all of the data should fall between 0 in.and 25.65 in.
• C)No tree will have a diameter of more than 22.3 in.
• D)Fifty percent of the trees will have diameters between 13.5 and 15.6 inches.