Solutions Statistics

Blanking Out on Tests. Many students have had the unpleasant experience of panicking on a test becau

Question: Blanking Out on Tests. Many students have had the unpleasant experience of panicking on a test because the first question was exceptionally difficult. The arrangement of test items was studied for its effect on anxiety. The following scores are measures of debilitating test anxiety. which most of is call panicking or blanking out (based on data from item Arrangement, Cognitive Entry Characteristics, Sex arid Tes Anxiety as Predictors of Achievement in Examination Performance, by Klimko, journal of Experiential education, Vol. 52, No. 4 ) Is there sufficient evidence to support the claim that the population of scores have the same mean? Is there sufficient evidence to support the claim that the arrangement of the test items has an effect on the score?

Easy to Difficult	Difficult to Easy
39.39	33.62
20.6	35.91
24.23	27.24
28.71	27.62
38.81	34.02
16.32	26.68
21.13	32.34
7.1	42.91
31.73	26.63
27.85	29.49
32.83	29.34
26.69	30.2
32.86	30.26
30.02	35.32
30.29	33.53
28.02	32.54
28.9
21.06
21.96
30.72