1) A shipment of 20 mobile phone sets contains 3 defective sets. A retailer makes a random purchase of 5 of the sets. If X is the number of defective sets in the purchasing made by the retailer, then answer the following questions: a. Is X a random variable in this case? How? b. What is the type of the random variable 'X" and depth of its measurement (nominal, ordinal, interval or ratio)? C. Find the frequency and probability distribution table for the random variable X. d. Show the graph of frequency/ probability distribution of the random variable X and comment on its shape using mean and median values only. e. What is the expected outcome for the random variable X