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Questions and Answers
What is the relationship between the mean of the sample means (μ_x ̅) and the population mean µ?
What is the relationship between the mean of the sample means (μ_x ̅) and the population mean µ?
- μ_x ̅ is always greater than µ
- μ_x ̅ has no relation to µ
- μ_x ̅ is equal to µ (correct)
- μ_x ̅ is always less than µ
What is the formula to calculate the standard error of the sample mean (σ_x ̅)?
What is the formula to calculate the standard error of the sample mean (σ_x ̅)?
- σ/√(n+1)
- σ/√n (correct)
- σn
- σ/√(n-1)
What is the variance of the distribution of all sample means?
What is the variance of the distribution of all sample means?
- σ/√n
- σ^2/n (correct)
- σ^2
- σ^2*n
What is the shape of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
What is the shape of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
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What is the mean of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
What is the mean of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
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What is the variance of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
What is the variance of the sampling distribution of the mean of all samples of size n selected from a normal variable X?
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