5. The decision-making process A graduate student believes that people consider

Question

5. The decision-making process A graduate student believes that people consider faces with more contrast between eye color and skin tone as more feminine. She identifies the null and alternative hypotheses as: Ho: The level of contrast between eye color and skin tone does not affect how feminine a face is considered. H1: The level of contrast between eye color and skin tone affects how feminine a face is considered She chooses a significance level of.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 There is not enough evidence to reject the hypothesis that the contrast between eye color and skin tone does not affect how feminine a face is considered. There is not enough evidence to reject the hypothesis that the contrast between eye color and skin tone affects how feminine a face is considered. There is enough evidence to reject the hypothesis that the contrast between eye color and skin tone does not affect how feminine a face is considered. There is enough evidence to reject the hypothesis that the contrast between eye color and skin tone affects how feminine a face is considered What decision should the graduate student make if the test statistic is in the critical region? O The graduate student should reject the alternative hypothesis. O The graduate student should reject the null hypothesis O The graduate student cannot reject the null hypothesis.

Explanation / Answer

Solution:-

There is not enough evidence to reject the null hypothesis that level of contrats between eye color and skin tones does not effects how faminine a face is considered

There is enough evidence to reject the null hypotesis, level of contrats between eye color and skin tones does not effects how faminine a face is considered.

The graduate students should reject the null hypothesis.

Suppose that the test statistics is 3.25 and boundary to critical region is 2.576. The test statistics is inside the critical region. Therefore graduate students can reject the null hypothesis, and she conclusde that level of contrats between eye color andskin tones effects how faminine a face is considered.

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