b) d) What is the response variable in this study? (1 mark) identify the experimental units in this study. (1 mark) Describe a completely randomized design in the context of this question. Discuss which study (observational or completely randomized) is better and explain why. (5 marks) identify one potential lurking variable that may be confounded with this study. (1 mark) When visiting Orlando, the probability that a tourist goes to the amusement park in Orlando is 0.47, the probability that the tourist goes to the water park in Orlando is 0.58, and the probability that the tourist goes to both the amusement park and the water park in Orlando is 0.1. (9 marks) Let A be the event that a tourist visits the amusement park in Orlando and W be the event that a tourist visits the water park in Orlando. Draw a Venn diagram and label it properly with probabilities. (3 marks) What is the probability that a randomly selected tourist goes to either the amusement park or the water park in Orlando? (2 marks) What is the probability that a randomly selected tourist goes to neither the amusement park nor the water park in Orlando? (2 marks) What is the probability that a randomly selected tourist goes to the amusement park but not the water park in Orlando? (2 marks)