A population has parameters ? = 76.8 and ? = 63. You intend to draw a random sample of size n = 155. What is the mean of the distribution of sample means? ?_x? = What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) ?_x? = Get help: Video
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8. The standard deviation of the distribution of sample means is equal to the population standard deviation divided by the square root of the sample size. So, we have: σ/√n = 63/√155 ≈ 5.06 Show more…
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