1. A cumulative probability distribution of a random variable X is the probability P (X = x), where X is equal to a particular value x. (t/f)

a) For a group of 50 randomly selected people, the probability of two or more people sharing the same birthday (month and date) falls in the range of: in % range

b) 10 cards, including 5 red and 5 black. Randomly draw 5 cards. What the probability of getting 1 red and 4 black? % range

c) A batch of 30 laptops contains 10 defective laptops. A sample of 5 is drawn at random. What is the probability of finding 2 and just 2 defective laptops in the selected sample? % range