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TABLE 7.1 RANDOM NUMBERS The 10 most active stocks on the New York Stock Exchang

ID: 1186225 • Letter: T

Question

TABLE 7.1 RANDOM NUMBERS The 10 most active stocks on the New York Stock Exchange on March 6,2006, are shown here (The Wall Street Journal, March 7, 2006). AT&T; Pfizer Lucent Texas Instruments Nortel Gen. Elect. Qwest iShrMSJpn Bell South LSI Logic Exchange authorities decided to investigate trading practices using a sample of three of these stocks. Beginning with the first random digit in column 6 of Table 7.1, read down the column to select a simple random sample of three stocks for the exchange authorities. Using the information in the third Note and Comment, determine how many different simple random samples of size 3 can be selected from the list of 10 stocks.

Explanation / Answer

A look at New York Stock Exchange 10 most-active stocks at the close of trading:

Bank of America Corp. rose .4 percent to $12.06 with 82,482,300 shares traded.

Citigroup Inc. was unchanged at $46.97 with 21,686,700 shares traded.

EMC Corp. rose 1.8 percent to $24.90 with 37,218,600 shares traded.

Ford Motor Co. rose .1 percent to $13.40 with 26,207,200 shares traded.

General Electric Co. rose .3 percent to $23.49 with 23,614,900 shares traded.

J.C. Penney Co. was unchanged at $15.65 with 21,142,700 shares traded.

Pfizer Inc. rose .3 percent to $28.02 with 24,495,200 shares traded.

Rite Aid Corp. rose 4.2 percent to $1.75 with 19,524,400 shares traded.

Sprint Nextel Corp. fell .7 percent to $5.88 with 16,849,500 shares traded.

Valero Energy Corp. fell 4.7 percent to $43.42 with 20,444,100 shares traded