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Probability (Simple & Joint) Assignment: An investment-newsletter writer wanted to know in which investment areas her subscribers were most


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Probability (Simple & Joint) Assignment: An investment-newsletter writer wanted to know in which investment areas her subscribers were most interested. A survey was sent to 331 randomly
selected professional clients, with the following results: —m—
——————.—
-————.-m- ——————-_
——-_—-_——
TOTAL ———-I_-_-_ a. What is the probability that an investment client is a doctor? b. If an investment client’s main investment interest is stocks, what is
the probability that he or she is a banker? c. What is the probability than an investment client’s main interest is not
in bonds?

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