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Max Sandlin is exploring the characteristics of stock market
investors. He found that 60% of all investors have a net worth
exceeding $1,000,000; 20% of all investors use an online brokerage;
and 10% of all investors have a net worth exceeding $1,000,000 and
use and online brokerage. An investor is selected randomly, and E
is the event "networth exceeds $1,000,000," and O is the event "uses
and online brokerage." Which of the following is true?
A) E and O are collectively exhaustive
B) E and O are dependent
C) E and O are mutually exclusive
D) E and O are independent
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