Help me solve please

The Major decided to investigate the relationship between the annual income level, in US$ thousand, of the 85 residents and the percentage of their annual income that is donated to charities in the community. Exhibit 4 below is a scatterplot generated by MINITAB. Further analysis, using MINITAB, gives: Correlation of Income level and Donating percent = -0. 666. Interpret this value. [3 marks] (c) The expected value, E(X), of the probability distribution below is equal to 0. X -2 0 P(X = x) 0.3 0.1 0.2 0.1 0.3 Calculate the variance, Var(X), of the probability distribution. [3 marks] Total 20 marks