Does consuming beer attract mosquitoes? A study done in Burkino Faso, Africa, about the spread of malaria investigated the connection between beer consumption and mosquito attraction. ' In the experiment, 25 volunteers consumed a liter of beer while 18 volunteers consumed a liter of water. The volunteers were assigned to the two groups randomly. The attractiveness to mosquitoes of each volunteer was tested twice: before the beer or water and after. Mosquitoes were released and caught in traps as they approached the volunteers. For the beer group, the total number of mosquitoes caught in the traps before consumption was 434 and the total was 590 after consumption. For the water group, the total was 337 before and 345 after. Lefvre T., et al. "Beer Consumption Increases Human Attractiveness to Malaria Mosquitoes," 2010; 5(3): e9546. (a) Define the relevant parameter(s) and state the null and alternative hypotheses for a teat to see if, after consumption, the average number of mosquitoes is higher for peo who drink beer. Let group 1 be the people who drank beer and let group 2 be the people who drank water. = # #1 /2 P Pl p2 p $ 1 02 p P1 P2 7 Ho VS Ha (b) Compute the average number of mosquitoes per volunteer before consumption for each group. Round your answers to two decimal places. Beer group: Water group