Solved: The sample variance is used in the formula for standard, Basic Statistics

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The sample variance is used in the formula for standard

Question: 1. The sample variance is used in the formula for standard error when the population variance is not known. Why is it appropriate to substitute the sample variance for the population variance?

2. Why are the degrees of freedom for the t distribution and the degrees of freedom for sample variance the same?

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Basic Statistics: The sample variance is used in the formula for standard

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Basic Statistics: The sample variance is used in the formula for standard

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