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# Two-Sample T-Test

APSTAT-YTYEYD

A two-sample T-test attempts to determine if

A

A significant difference exists between two proportions.

B

A significant difference exists between two means when the population standard deviation is known.

C

A significant difference exists between two means when the population standard deviation is unknown.

D

A straight line relationship exists between two quantitative variables.

E

A relationship exists between two categorical variables.