hard20 pts · first answer countsab-testinghypothesis-testing

Is 10% versus 11% significant

Control converts 10% of 5,000 users and treatment converts 11% of 5,000. Using a pooled two-proportion z-test, what is the result at α = 0.05, two-sided?

A.z ≈ 3.3, significantB.z ≈ 1.0, clearly no differenceC.z ≈ 2.1, significantD.z ≈ 1.6, not significant

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Is 10% versus 11% significant

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