If researcher obtains sample mean of m 88 which, Ask an Expert

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A researcher manages the treatment to sample of participants selected from population with µ = 80. If researcher obtains sample mean of M = 88, which combination of factors is most likely to result in rejecting null hypothesis?

1. σ = 5 and n = 25
2. σ = 5 and n = 50
3. σ = 10 and n = 25
4. σ = 10 and n = 50

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