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Mathematics, 26.10.2019 02:43, avenhollander
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
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