Research data indicates that adolescents, especially girls, experience an increase in self-esteem when given a team-sports leadership program. To evaluate this result, a researcher obtains (randomly) a sample of n = 9 adolescent girls, all 13 years old. After they participate in the program a self-esteem test is given to each participant and the average score for the sample is M = 84. It is know that the distribution of self-esteem scores for the population of girls is normal with µ = 75.
a. Assuming that the population standard deviation is σ = 12, is this result sufficient
to conclude that self-esteem of the group is significantly different from
self-esteem for adolescence girls? Use a two-tailed test with α = .05.
b State the alternative Hypothesis in words and symbols.
Direction
Size of Effect
Research data indicates that adolescents, especially girls, experience an increase in self-esteem when given a team-sports...
A researcher is interested in whether sports participation results in higher self-esteem in girls. She collects self-esteem scores from 20 midd le school girls who either do or do not participate in sports and compared them. The data are below -_05): Girls with sports Girls without sports 14 136 121 81 144 169 225 169 121 289 81 64 100 81 121 81 121 64 144 121 169 10 12 13 15 13 12 17 13 Ex 1596 ΣΧ-124 N-10...
Research examining the effects of preschool child care has found that children who spent time in day care, especially high-quality day care, perform better on math and language tests than children who say home with their mothers (Broberg, Wessels, Lamb, & Hwang, 1997). In a typical study, a researcher obtains a sample of n = 10 children who attended day care before starting school. Then children are given a standardized math test for which the population mean is μ =...
Article Summary I Read the article below and provide feedback by writing a 2 page summary. Please write in essay format (you may include the questions but the response should be in essay format) Must include the following information Title of the article Author(s) of the article Reference list (include the article itself and any other reference material such as another article that is cited in your summary). Use the reference list in the article to get information about another...