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A graduate student believes that people consider faces with more contrast between eye color and skin tone as more feminine. He identifies the null and alternative hypotheses as:

Respuesta :

Null hypothesis is basically: there is no difference between two characteristics.
So in this case H(0) or null hypothesis is:
No difference in femininity based on contrast between eye color and skin tone.
Alternative hypothesis or H(a) basically contradicts that, so in this case:
There is observed difference in femininity based on contrast between eye color and skin tone.

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