Question

questions 13-14

Question 13 (4 points) Consider the research design described above. Does the study support her hypothesis? Compute the upper bound of the confidence interval using the following data: mean of the difference scores (subtract pretest from posttest): -1.2 standard error of the difference scores: 0.6 The formula for the Cl upper bound is [standard error of the difference scores] [t critical value]+[mean of the difference scores Again, your answer must be expressed as a decimal out to 2 places, e.g., 20. Your Answer: Answer DView hint for Question 13 Question 14 (3 points) Would you reject the null hypothesis given your response to the question above?

Answer 1

Solulion Given data Mean f the diffeience Scores 1 of the clifference Scores = 06 Standaid Sample SizLe ; n = 10 (Assume given in ckta) not Nouo we need tofind eut -the CI uppe bound +hat -fomula uoe Kno Sstandard diferenejxt citcad valuej+rmeon of Stone Ihe ifference where ciHcul value ib zJ dt = n- ume) O.o eiiti cul value i 2.26 two tailed) Let, CI uppei bound = 06 X 2.26 +(-- I-2j /356-2 o15 (14) hypothe sis