Question

# Can you please help me step by step work this problem out. I keep getting the...

Max Sandlin is exploring the characteristics of stock market investors. He found that sixty percent of all investors have a net worth exceeding \$1,000,000; 20% of all investors use an online brokerage; and 10% of all investors a have net worth exceeding \$1,000,000 and use an online brokerage. An investor is selected randomly, and E is the event "net worth exceeds \$1,000,000" and O is the event "uses an online brokerage." P(O ∪ E) =

0.17

0.50

0.80

0.70

0.10

P(O U E)

= P(O) + P(E) - P(O E)

= 0.60 + 0.20 - 0.10

= 0.70

option D is correct.

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