Part A: Knowledge and Understanding (11 marks) identify the choice that best completes the statement or answers the question. Put all answers in the box on page 3. 1. The mean age of five people in a room is 30 years. One of the people, whose age is 50 years, leaves the room. The mean age of the remaining four people in the room is a. 40 b. 30 c. 25 d. Cannot be determined from the information given 2. A set of data has a mean that is much larger than the median. Which of the following statements is most consistent with this information? a. The distribution is symmetric b. The distribution is skewed left c. The distribution is skewed right d. The data set has a few low outliers 3. Earthquake intensities are measured using a device called a seismograph, which is designed to be most sensitive to earthquakes with intensities between 4.0 and 9.0 on the Richter scale. Measurements of nine earthquakes are given as follows: 4.5 L 5.5 H 8.7 8.9 6.0 H 5.2 where L indicates that the earthquake had an intensity below 4.0 and an H indicates that the earthquake had an intensity above 9.0. The median earthquake intensity of the sample is a. 5.75 b. 6.00 c. 6.47 d. 8.70 4. The boxplots below summarize the distribution of SAT verbal and math scores among students at an upstate New York high school. Maui.- ll:l:.ll Verbal IE:l:lI wlllAllldilli 300 400 500 60:1 700 Which of the following is/are true? a. The range of math scores equals the range of verbal scores. b. The highest math score equals the median verbal score. c. The verbal scores appear to be symmetric, while the math scores appear to be skewed to the left. d. Both a and b