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The Billy Boot garbage bag company randomly selects 190 bags during the first hour of production and finds 21 of them have holes. After modifying

The Billy Boot garbage bag company randomly selects 190 bags during the first hour of production and finds 21 of them have holes. After modifying the raw plastic used in the process, another check of 320 bags shows that 29 have holes. At the 0.05 level of significance, test the claim that the modification has decreased the proportion of bags with holes.

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