Suppose that fund-raisers at a university call recent graduates to request donations for campus outreach programs. they report the following information for last year's graduates. size of donation $0 $10 $25 $50 proportion of calls 0.40 0.35 0.20 0.05 three attempts were made to contact each graduate. a donation of $0 was recorded both for those who were contacted but who declined to make a donation and for those who were not reached in three attempts. consider the variable x = amount of donation for the population of last year's graduates of this university. a. write a few sentences describing what you think you might see if the value of x was observed for each of 1000 graduates. b. what is the most common value of x in this population? c. what is p(x> = 25)? d. what is p(x> 0)?