What is the difference between a statistic and a parameter/ (5%)
How do the Empirical rule and Chebychev rule differ? (5%)
A trader uses a strategy to bid for the short-term moves of the stock market.
(1) If the success rate of the strategy is unknown, how many pilot trades are
needed to guarantee the error of the estimate for the success rate to be
within 5% with confidence level 95%? (5%)
(2) If the success rate of the strategy is 60%, is it extraordinary if he loses 75 of
100 trades? (5%)
(3) If he loses consecutive 5 trades, do you still believe that the success rate of
the strategy is 60%? (5%)
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