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A state official is concerned that a certain school district in Texas is performing worse than the overall national average. He would like to test

A state official is concerned that a certain school district in Texas is performing worse than the overall national average. He would like to test this hypothesis using a sample. Which test should he use?

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Independent samples t-test, one-tailed

One Sample t-test, two-tailed

One Sample t-test, one-tailed

Independent Samples t-test, two tailed

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