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In one of the banks in Davao City, the number of tellers [X] are busyr 1with customers at 12:00 noon that varies from day to day. Past records indicate the probability distribution of X below, Answer the following questions: 1. What is the probability that exactly two tellers are busy at 12:00 noon? 2. What is the probability that at least three tellers are busy at 12:00 noon? 3. What is the probability that fewer than the four tellers are busy at 12:00 noon? 4. What is the probability that, at least to two, but fewer than four tellers are bus};r at 12:00 noon? 5. Solve and interpret the mean and variance of the probability distribution