7. Market Indexes. The accompanying table shows quarterly stock prices on the Dar es Salaam Stock Exchange for 2006-2007. Construct two stock market indexes, one using weights as in the Dow Jones Industrial Average, the other using weights as in the Standard & Poor's Com- posite Index. (LO2)

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Quarterly Prices in Tanzanian Shillings for Trading on the Dar es Salaam Stock Exchange (Only six stocks were traded at the start of 2006.) Tanzania Breweries, Tanzania Tanzania Cigarette TOL Tea Packers, Company, Simba, Swissport, 276 million* 32 million* 16.4 million* 100 million* 64 million* 36 million* Mar. 2006 1500 295 440 1580 830 610 Jun. 2006 1500 275 440 1500 820 610 Sep. 2006 1600 300 440 1540 890 670 Dec. 2006 1580 330 440 1480 960 680