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Grade 7 · SP
Random Sampling and Population Inference
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Grade 7Common Core 7.SP.A.2SPVerified correct ✓
Worked examples
A researcher randomly selects 50 members from a population of 5000. The sample has mean x̄ = 52.66. What is the best point estimate of the population mean μ? Answer: 52.66
A researcher randomly selects 40 members from a population of 5000. The sample has mean x̄ = 47.62. What is the best point estimate of the population mean μ? Answer: 47.625
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