A graduate student believes that people consider faces with more contrast between lip color and skin tone as more feminine. He identifies the null and alternative hypotheses as:
- H₀: The level of contrast between lip color and skin tone does not affect how feminine a face is considered.
- H₁: The level of contrast between lip color and skin tone affects how feminine a face is considered.
- He chooses a significance level of 0.05. After he collects the data and computes the sample statistics, it is time for him to make a decision about H₀.

Check the two possible decisions that the graduate student can make given his choices of H₀ and H₁. Check all that apply.
a. There is not enough evidence to reject the hypothesis that the contrast between lip color and skin tone does not affect how feminine a face is considered.
b. There is not enough evidence to reject the hypothesis that the contrast between lip color and skin tone affects how feminine a face is considered.
c. There is enough evidence to reject the hypothesis that the contrast between lip color and skin tone does not affect how feminine a face is considered.
d. There is enough evidence to reject the hypothesis that the contrast between lip color and skin tone affects how feminine a face is considered.