# Question 6 incorrect 0 2 pts before hypothesis

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Question 6 Incorrect 0 / 2 pts Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct a(n) ________ because it ________.<br> Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct a(n) ________ because it ________. effect size estimate; tells researcher the number of participants needed for trustworthy results power analysis; tells the researcher the number of participants needed for trustworthy results alpha testing; determines how meaningful the study results will be
Question 8 Correct! 2 / 2 pts The larger the effect size, the:<br> The larger the effect size, the:
Question 9 Correct! 2 / 2 pts
Skip to question text. Imagine that a study of memory and aging finds that younger participants correctly recall 55% of studied words, older participants correctly recall 42% of studied words, and the size of this effect is Cohen's d = 0.49. According to Cohen's conventions for interpreting d , this effect is:
Question 10 Correct! 2 / 2 pts If you are correct about the expected direction of an effect, then using a one-tailed hypothesis test instead of a two-tailed hypothesis test:<br> If you are correct about the expected direction of an effect, then using a one-tailed hypothesis test instead of a two-tailed hypothesis test:
Score for this attempt: 18 out of 20 Submitted Oct 1 at 11:11am This attempt took 10 minutes. Question 1 Correct! 2 / 2 pts The symbol representing a standard deviation calculated by using a sample to estimate the population standard deviation is: The symbol representing a standard deviation calculated by using a sample to estimate the population standard deviation is: Question 2
Correct! 2 / 2 pts The correct formula for effect size using Cohen's <em>d</em> for a paired-samples <em>t</em> test is: The correct formula for effect size using Cohen's d for a paired-samples t test is:
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Question 3 Incorrect 0 / 2 pts Skip to question text. A study by Bettmann (2007) published in the Journal of the American Psychoanalytic Association assessed whether the attachment relationships between adolescents and their parents change as a result of a residential wilderness treatment experience for the adolescents. Participants completed the Adolescent Attachment Questionnaire at the start and at the end of the wilderness program. Which statistical test would we use to determine whether the wilderness treatment affected attachment relationships?