According to the Roanoke Times (March 16, 1997), McDonald's sold 42.1% of the market share of hamburgers.

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According to the Roanoke Times (March 16, 1997), McDonald's sold 42.1% of the market share of hamburgers. A random sample of 75 burgers sold resulted in 28 of them by McDonald's. Use material in Section 9.10 to determine if this information supports the claim in the Roanoke Times.

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