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A marketing team analyzes whether a new advertising campaign increased sales.
  • \(H_0\): The campaign had no effect on sales.
  • \(H_1\): The campaign increased sales.
The statistical test results in a very small \(p\)-value of \(0.0004\).
Is this result significant at the \(0.1\pourcent\) level (\(\alpha = 0.001\))? What does this imply for the marketing team?
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