The table here shows six stocks traded on either the New York Stock Exchange (NYSE) or the NASDAQ Exchange. Also shown is an indication of whether the stock gained or lost value by the close of the trading day.

You plan to randomly choose one stock from the group. Determine
a. The simple probability of selecting a stock that lost value (Event A).
b. The simple probability of selecting a NYSE stock (Event B).

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ACM BI-SYS ㎝ DF China ED( FPI Exchange NYSE NYSE NAS NAS NYSE NAS Perform Gain Loss Loss Loss Gain