9 Points The Average Stock Price For Companies Making Up The S P 500 Is 30 And The Standard Deviation Is 18 20 Bus 1 (122.17 KiB) Viewed 57 times
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(9 points) The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $18.20 (Business Week, Special Annual Issue, Spring 2003). Assume the stock prices are normally distributed. (a) What is the probability that a stock price of a company will be more than $40 (to 4 decimals)? (b) What is the probability that a stock price of a company will be lest than $20 (to 4 decimals)?
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