Question

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.

1. State the Independent and Dependent Variables
2. State the Null Hypothesis in words and symbols.

b State the alternative Hypothesis in words and symbols.

3. Compute the appropriate statistic.
4. What is the decision (Retain or Reject)
5. State the full conclusion in words
6. Effect

Direction

Size of Effect

Answer 1