Can someone help me with this pls? Could u solve it in a paper and help me understand it? Thank u in advance.

A. 1. Cite three examples of two variables that are positively correlated and three bivariate data that are negatively correlated. Explain. 2. Sketch the scatterplot that shows: a. positive correlation b. negative correlation C. zero correlation 3. Determine whether the correlation between the given bivariate data is most likely positive negative, or zero. a. age and height during growing years of a child b. grade in Statistics and number of hours spent in studying Statistics c. amount of rainfall and the number of leaves that fall on plants d. weight of a person and his/her skill in problem solving e. GNP and the ratio of the number of families to a car in a country B. 1. When is it appropriate to use the t-distribution in testing a hypothesis about a population mean? 2. In what ways are the distributions of the z-statistic and the t-statistic alike? How do they differ? 3. Calculate the t-statistic for each of the following: a. H = 12, X = 15, s = 4, n =12 b . H = 10, X= 7.8, s = 5.1, n = 10 C. H = 5.3, X - 5, s = 0.14, n =8 d. H = 9.1, X= 7.2, s = 1.8, n =15 e. H = 7, X = 5, s = 3, n = 10