Dental anxiety study. Refer to the BMC Oral Health (Vol. 9, 2009) study of adults who completed the Dental Anxiety Scale, presented in Exercise. Recall that scores range from 0 (no anxiety) to 25 (extreme anxiety). Summary statistics for the scores of 15 adults who completed the questionnaire are and s = 3.6. Conduct a test of hypothesis to determine whether the mean Dental Anxiety Scale score for the population of college students differs from μ = 11. Use α = .05.
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