Question

Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents. (McGee, Williams, Howden-Chapman, Martin & Kawachi, 2006). In representative study, a sample of n = 100 adolescents with a history of group participation is given a standardized self-esteem questionnaire. For the general population of adolescents scores on this questionnaire form a normal distribution with a mean of ?= 50and a standard deviation of ?=15. the sample group-participation adolescents had an average of M=53.8.



A) Does the sample provide enough evidence to conclude that self-esteem scores for those adolescents are significantly different from those of the general population? Use the two tailed test with a= .05



B)Comput cohens d to measure the size of the difference.



C) write a sentance describing the outcome of the hypothesis test and the measure of the effect size as it would appear in a research report.

Answer 1

No gdssethbbh