Question 9 4 pts A random sample of 300 ICU patients, a researcher wants to see if there is evidence that the mean heart rate is lower in male ICU patients than in female ICU patients. Assume the group 1 is male ICU patients and group 2 is female ICU patients. a) The parameter of interest: Type the capital letter from options below) A Single mean B Single proportion C Difference in means D Difference in proportions E Correlation b) Choose the correct hypothesis test (Type the capital letter from options below) A Hoit = H2 H Ho: P1 = P2 Hail > #2 Haipi # P2 Ho: P1 = P2 Ho: P1 = P2 Ha:P1 P2 C Hoith = Hz Ho:X1 = X2 Hai x2 E Ho: p = 300 Ho:p = 300 Haip > 300 Ha:p > 300 Ho: H = 300 M Ho: X = 300 Hail > 300 Ha: > 300 G Ho: H = 300 N Ho:x = 300 Hail