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Assume the return on a market index represents the common factor and all stocks in the economy have a beta of 1. Firm-specific returns all

Assume the return on a market index represents the common factor and all stocks in the economy have a beta of 1. Firm-specific returns all have a standard deviation of 30%.
Suppose an analyst studies 20 stocks and finds that one half have an alpha of 3%, and one-half have an alpha of -3%. The analyst then buys $1million of an equally weighted portfolio of the positive-alpha stocks and sells short $1million of an equally weighted portfolio of the negative-alpha stocks.
A) What is the expected profit(return) (in dollars), and what is the standard deviation of the analysts profit? (Enter answers in dollars not in millions. Round andwers to nearest dollar amount) image text in transcribed
B-1. How does your answer for standard deviation change if the analyst examines 50 stocks instead of 20? (Enter answers in dollars not in millions. Round andwers to nearest dollar amount)
B-2. How does your answer for standard deviation change if the analyst examines 100 stocks instead of 20? (Enter answers in dollars not in millions)
image text in transcribed
Assume the return on a market index represents the common factor and all stocks in the economy have a beta of 1. Firm-specific returns all have a standard deviation of 30%. Suppose an analyst studies 20 stocks and finds that one-half have an alpha of 3%, and one-half have an alpha of 3%. The analyst then buys $1 million of an equally weighted portfolio of the positive-alpha stocks and sells short $1 million of an equally weighted portfolio of the negative-alpha stocks. a. What is the expected profit (in dollars), and what is the standard deviation of the analyst's profit? (Enter your answers in dollars not in millions. Round your answers to the nearest dollar amount.) b-1. How does your answer for standard deviation change if the analyst examines 50 stocks instead of 20 ? (Enter your answer in dollars not in millions. Round your answer to the nearest dollar amount.) Answer is complete but not entirely correct. Standard deviation $1,060,600 ? b-2. How does your answer for standard deviation change if the analyst examines 100 stocks instead of 20 ? (Enter your answer in dollars not in millions.) Answer is complete but not entirely correct

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