Low-volume high-intensity interval training. A study in the Journal of Translational Medicine (Vol. 18, 2020) analyzes low-volume high-intensity interval training (HIIT) which is believed to improve cardiometabolic health, work ability, and well-being in severely obese individuals. The results of the study showed that HIIT reduced the weight of all 65 obese participants by about 3.3 kg to 5.3 kg. Assume that the average weight loss of the participants follows an approximate uniform distribution between 3.3 kg and 5.3 kg.

a. Find the probability that the average weight loss for those obese individuals is less than 4.1 kg with HIIT.

b. Find the probability that the average weight loss for those obese individuals is between 3.9 kg and 5 kg with HIIT.