Really need help with these questions.

(9 points) City Salaries ~ City officials in Chicago are compiling a report on employee compensation. They collect a simple random sample of 70 Fire Department employees and a simple random sample of 70 Police Department employees. The data is summarized in the table below. Remaining time: 43:11 (min:sec) Department Mean weekly salary SD of weekly salary Population 1: Fire 1844.69 396.14 Population 2: Police 1631.97 245.66 Officials want to know if there is a difference in the mean weekly salary for the two departments. Round all calculated values in this problem to 4 decimal places. 1. Which type of inference procedure should be used? A. Two sample Z-test for the difference in population proportions B. Two sample t-test for the difference in independent means C. One sample t-test for a population mean D. Chi-square goodness of fit test E. Chi-square test of independence 2. Which set of hypotheses expresses the research question using appropriate notation? O A. Ho: M1 = 1844.69 vs. HA: M2 = 1631.97 O B. Ho: M1 = M2 VS. HA: MI > M2 O C. Ho: M1 = M2 VS. HA: MI