The scatterplot below shows the relationship between the percentage of the population of a state (Washington, DC included) that has at least a bachelor's degree and the median income (in dollars) of the state for 2009. Use the scatterplot to answer the questions that follow. Source: U.S. Census Bureau a. Describe the correlation between the percentage of the population with at least a bachelor's degree and the median income, being sure to specifically note the strength and direction of the correlation. (2 points) b. One observation seems to stick out from the rest. Circle it on the scatterplot. This particular observation is for Washington, DC. Can you think of any reasons why Washington, DC might have a high percentage of residents with a bachelor's degree, but a lower than expected median income? (2 points) c. The correlation coefficient for this scatterplot is 0.718. Is this value high enough to prove that there is, in fact, a correlation between the percentage of residents of a state with a bachelor's degree and the median income? Use the table given below to assist you in your answer. (Hint: Refer to Section 6.6 pages 303-304 of the text) (2 points)