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What is the chance of making a type i error

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A sample of 40 individuals is randomly selected from a normal population with μ = 100 and σ = 25. Those individuals are treated, and the treatment is expected to increase scores by 6.2 points. Assuming a two-tailed hypothesis test with α = .05, what is the chance of making a Type I error?

Reference no: EM132167170

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