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AP® Statistics

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Two-Sided

APSTAT-FYFENE

Suppose a two-sample T-test gives appropriate evidence of a significant difference between the two samples at the $10\%$ level. Suppose a one-sided T-test was performed.

What is the greatest alpha level that would be considered statistically significant for this data?

A

$1\%$

B

$5\%$

C

$10\%$

D

$20\%$

E

Unable to determine.