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At the start of the year, you believed that the annualized volatility of XYZ Corporation's equity was 45%. At the end of the year, you
At the start of the year, you believed that the annualized volatility of XYZ Corporation's equity was 45%. At the end of the year, you have collected a year of daily returns, 256 business days' worth. You calculate the standard deviation, annualize it, and come up with a value of 48%. Can you reject the null hypothesis, Ho: = 45%, at the 95% confidence level
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