Figure 1: The density curve of a continuous random variable X . (Answer Yes or No) This is a symmetric and unimodal distribution . What is the area under the density curve? . According to the graph7 what is the second quartile (median) of the random variable X. . If the third quartile of X is 0.5832 and the first quartile is 415832, what percentage of data lies between O.5832 and 0.5832? Use the following information to answer Questions 5 7 Hospital records show that 15% of all patients are admitted for surgical treatment. . What is the probability that a patient admitted need surgical treatment? . Consider two randomly selected patients who are admitted to hospital. What is the probability that the two patients admitted needs surgical treatment? . Consider two randomly selected patients who are admitted to hospital. What is the probability that at most one of two patients admitted doesn't need surgical treatment