A population of N = 10 scores has µ = 21 and σ = 3. What is the population variance?   Group of answer choices A.) 7 B.) 100 C.) 2 D.) 9

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Q: Find the minimum sample size n needed to estimate u c-0.95, o=7.3, and E=2

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Q: Let X1, X2,..., X7 denote a random sample from a population having mean u and variance o.

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