The price per share of stock for a sample of 25 companies was recorded at the beginning of 2012and then again at the end of the 1st quarter of 2012 (the wall street Journal, April 2, 2012).How stocks perform during the 1st quarter is an indicator of what is ahead for the stock marketand the economy. Use the sample data in the file entitled StockPrices to answer the following.a. Let didenote the change in price per share for company i where di = 1st quarter of 2012price per share minus the beginning of 2012 price per share. Use the sample mean of thesevalues to estimate the dollar amount a share of stock has changed during the 1st quarter

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The price per share of stock for a sample of 25 companies was recorded at the beginning of 2012
and then again at the end of the 1st quarter of 2012 (the wall street Journal, April 2, 2012).
How stocks perform during the 1st quarter is an indicator of what is ahead for the stock market
and the economy. Use the sample data in the file entitled StockPrices to answer the following.
a. Let di
denote the change in price per share for company i where di = 1st quarter of 2012
price per share minus the beginning of 2012 price per share. Use the sample mean of these
values to estimate the dollar amount a share of stock has changed during the 1st quarter

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