Question

An HRM training researcher observed a situation in which employees learned job-related skills in several conditions: no learning strategy, a verbal learning strategy, a visual one and a verbal–visual one. Consider the table below, which outlines the results from this experiment. What can we infer?

Tests of Within-Subjects Effects

Measure: MEASURE_1

Type Ill Sum of Squaresdf Mean SquareF Source Sig learn Sphericity 262.700 3 87.567 103.697.000 Assumed Greenhouse Geisser Huynh-Feldt 262.700 1.144229.701103.697.000 Lower-bound |262.700 1.000 262.700 103.697.000 262.700 1.103 238.140 103.697.000 Error(learn) Sphericity 22.80027 844 Assumed Greenhouse- |22.800 9.928 2.296 Geisser Huynh-Feldt22.800 10.293 |2.215 Lower-bound 22.800 9.000 2.533

a. There is too much sphericity in the model.

b. There are too many errors in the model.

c. The null hypothesis could be rejected.

d. The null hypothesis must not be rejected.

Answer 1

from the ANOVA table we have all the F-ratios as 103.967.

also we have a) F_(0.05,3,27)=2.960351

   b) F_{(0.05,1.103,9.928)}=5.117355

c) F_{(0.05,1.144,10.293)}=4.964603

d) F_(0.05,1,9)=5.117355

hence all the F-ratios are very much greater than the respective tabulated values.

therefore, c) the null hypothesis could be rejected.