pr (BI) 1-,22 78 2. At a local community college, seven sections of at math class are taught on MWF and three sections are taught on TR. Seventy five (70%) percent of MWF sections are taught by full-time faculty and only fricoour percent (20%) of the TR sections are taught by full- time faculty. If Joan's professor for her math class is a part-time teacher (i.e., not full-time faculty), then what is the probability that she is taking a class that meets on TR? F P . 20 TH. . 80 P 3. An unfair coin with Pr(H) = 0.55 if flipped. If the flip results in heads, a marble is selected from an urn containing 2 red and 3 white. If the flip results in tails, then a marble