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The music industry is interested in estimating the percentage of all music played that has been legally purchased. They investigate 500 randomly selected songs on

The music industry is interested in estimating the percentage of all music played that has been legally purchased. They investigate 500 randomly selected songs on people's music players. Choose the technique that will most likely be used in the project.*

confidence interval for population mean

confidence interval for proportion

hypotheses test for population mean

hypotheses test for population proportion

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