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The EPA sets an airborne limit of 5 ppm on vinyl chloride, a gas used to make plastics. Production must be halted if the mean

The EPA sets an airborne limit of 5 ppm on vinyl chloride, a gas used to make plastics. Production must be halted if the mean amount of vinyl chloride in the air at its plant exceeds 5.0 ppm. State the null and alternative hypotheses of a test to determine if the production process should be halted.

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