4. The decision-making process A graduate student believes that people consider faces with more contrast between lip color and skin tone as more feminine. She identifies the null and alternative...

Extracted text: 4. The decision-making process A graduate student believes that people consider faces with more contrast between lip color and skin tone as more feminine. She identifies the null and alternative hypotheses as: Ho: 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. She chooses a significance level of 0.01. After she collects the data and computes the sample statistics, it is time for her to make a decision about Ho. Check the two possible decisions that the graduate student can make given her choices of Ho and H1. Check all that apply. O 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. O 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. O There is enough evidence to reject the hypothesis that the contrast between lip color and skin tone affects how feminine a face is considered. O 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.


Extracted text: What decision should the graduate student make if the test statistic is in the critical region? O The graduate student should reject the null hypothesis. O The graduate student should reject the alternative hypothesis. O The graduate student cannot reject the null hypothesis. Suppose that the test statistic is 1.94 and the boundary to the critical region is 2.576. The test statistic is v the critical region. Therefore, the graduate student v reject the null hypothesis, and she v conclude that the level of contrast between lip color and skin tone affects how feminine a face is considered. You may use the Distributions tool if you find it helpful. Standard Normal Distribution Mean - 0.0 Standard Deviation = 1.0 .5000