The estimated standard error in the denominator of the repeated-measures t statistic measures the typicalmean difference that is expected for a sample selected from a population with a zero mean difference

Most bicyclists who are killed

A) are not wearing helmets. B) are wearing helmets. C) are under age 7. D) do not understand traffic signs.

Octavio feels comfortable being a boy, which consequently makes him happy. Which of the following self-evaluations reflects Octavio's gender identity?

A) gender contentedness B) gender typicality C) feels pressure to conform to gender roles D) gender-disconnectedness