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When testing a null hypothesis about a single population mean and the population standard deviation is unknown, if the sample size is less than 30, one compares the computed test statistic for significance with a value from the ___________ distribution.

User Chris Neve
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Answer: t-distribution

Explanation:

When sample size is less than 30, t-distribution is used

When sample size is greater than 30, z-distribution is used

User Zdd
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