4. If E and F are sta tis tically independent, then the probability of E or F occurring is a. Pr(E) + Pr(F) b. Pr(E) + Pr(F) - Pr(E)Pr(F) c. Pr(E)Pr(F) d. Pr(E) + Pr(F) + Pr(E and F) 5. The eight leading countries in auto production in 1986 ranged from Japan (7.8 million) to Canada (1.1 million). These eight figures had an average of 3.5 million, a mode of 1.3 million, and a median of 2.15 million. The total production of these 8 countries was therefore approximately: a. 28 million b. can't tell without further information c. 10 million d. 17 million 6. Sylvia MacPherson's final exam mark of 82 was the 90th percentile in a class of 1000 students. This means that roughly __ __ students scored __ __ or less. a. 900, 82 b. 820, 90 c. 100, 82 d. 180, 90