a. In a biostatistics class of 40 students, what is the probability that at least two people in the class will have the same birthday (i.e. the same day and month)? For simplicity, ignore leap year (Feb. 29). Note: list the equation you will use and how the problem is set up, using shorthand as appropriate. However, you may want to do the calculations themselves on Excel. b. How many people would you need to have about a 50% probability of having at least two people with the same birthday?
