A population has ? = 61.8 and standard deviation ? = 9.3. A sample of five scores has a z score of -1.03. What is the mean of the sample? 52.2 64.9 62.5 57.5
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Step 1: Recall the formula for calculating the z-score: z = (X - μ) / (σ / √n) where: z = z-score X = individual score μ = population mean σ = population standard deviation n = sample size Show more…
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