Shown here are the top 19 companies in the world in terms of oil refining capacity. Some of the companies are privately owned and others are state owned. Suppose six companies are randomly selected.
a. What is the probability that exactly one company is privately owned?
b. What is the probability that exactly four companies are privately owned?
c. What is the probability that all six companies are privately owned?
d. What is the probability that none of the companies is privately owned?
Company Ownership Status
ExxonMobil ............... Private
Royal Dutch/Shell ........... Private
British Petroleum ............. Private
Sinopec................. Private
Valero Energy .............. Private
Petroleos de Venezuela ......... State
Total ................. Private
ConocoPhillips ............. Private
China National ............. State
Saudi Arabian .............. State
Chevron ............... Private
Petroleo Brasilerio ........... State
Petroleos Mexicanos ........... State
National Iranian ............ State
OAO Yukos .............. Private
Nippon ................ Private
OAO Lukoil .............. Private
Repsol YPF .............. Private