Instruction Following the completion of your reading assignments do the set of problems indicated below and show your work very clearly 18 The sales records of a real estate agency show the following sales over the past 200 days: Number of Houses Sold 0 Number of Days 60 80 40 3 16 19.a) How many sample points are there? 20. b) Assign probabilities to the sample points, show their values and justify your response if this probabilities are valid probabilities or not? 21 c) What is the probability that the agency will not sell any houses in a given day? It will not sell any Houses a day? 22 dy what is the probability of selling less than 3 houses?