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Describe the specific steps of null hypothesis testing logic that Mehl and colleagues followed when investigating whether men and women differ in talkativeness, as well as their final conclusion based on their sample's effect size.
Question: Describe the specific steps of null hypothesis testing logic that Mehl and colleagues followed when investigating whether men and women differ in talkativeness, as well as their final conclusion based on their sample's effect size.
Sample answer: First, Mehl and colleagues assumed the null hypothesis was true, meaning there is no difference in talkativeness between men and women in the population. Second, they evaluated how likely it was to find their sample's small difference () under this assumption. Third, because finding this result was fairly likely if the null hypothesis were true, they decided to retain the null hypothesis and concluded there was no evidence of a sex difference in the population.
Key points:
- Assume the null hypothesis is true (no population difference in talkativeness).
- Evaluate the likelihood of finding the sample difference ().
- Decide to retain the null hypothesis because the sample difference was fairly likely under the null hypothesis.
- Conclude there is no evidence of a sex difference in the population.
Rubric: The answer must identify the initial assumption of the null hypothesis, the evaluation of the likelihood of the sample finding (), the decision to retain the null hypothesis, and the final conclusion that there is no evidence of a sex difference in the population.
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Research Methods in Psychology - 4th American Edition @ KPU
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In a study examining whether men and women differ in talkativeness, researchers found a very small sample difference (d = 0.06). Because this result was fairly likely to occur if there were truly no difference in the population, the researchers retained the null hypothesis and concluded there was no evidence of a sex difference in talkativeness.
In Mehl and colleagues' study on sex differences in talkativeness, the researchers found a small sample difference of . What was the primary reasoning for their decision to retain the null hypothesis?
In Mehl and colleagues' investigation of talkativeness, the researchers used a specific logical process to evaluate their findings. Match each part of their research reasoning to the role it played in their statistical decision.
Arrange the logical steps used in Mehl and colleagues' study to evaluate whether a sex difference in talkativeness exists in the population.
In Mehl and colleagues' study on whether men and women differ in talkativeness, what was the specific value of the sample difference (effect size ) that they evaluated?
In Mehl and colleagues' study on talkativeness, the decision to retain the null hypothesis was based on the premise that a small sample difference of would be highly unlikely to occur if there were actually no difference in the population.
In Mehl and colleagues' investigation of talkativeness, the researchers evaluated their sample result of as being 'fairly likely' to occur if the null hypothesis were true. Based on this evaluation, they judged the evidence for a sex difference in the population to be _____, leading them to retain the null hypothesis.
In Mehl and colleagues' study on talkativeness, different elements of the research design and statistical reasoning must be aligned with their corresponding roles in null hypothesis testing. Match each statistical concept to its specific representation in Mehl's study.
In Mehl and colleagues' study, the researchers chose to retain the null hypothesis because a sample difference of is considered fairly _____ under the assumption that the null hypothesis is true.
To evaluate the logic of null hypothesis testing in Mehl's talkativeness study, order the steps of the researchers' statistical reasoning from their initial assumption to their final conclusion.
Describe the specific steps of null hypothesis testing logic that Mehl and colleagues followed when investigating whether men and women differ in talkativeness, as well as their final conclusion based on their sample's effect size.
Based on the provided case context, what specific statistical decision should the researchers make regarding the null hypothesis, and what substantive conclusion should they draw about talkativeness in the population?
In Mehl and colleagues' study, if they determined that their sample difference of was fairly likely to occur under the null hypothesis, how must they apply this finding to their overall conclusion about a sex difference in talkativeness in the population?