Defense Acquisition Research Journal Issue 95

Technology Trust

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TABLE 4. HOTELLING FOR GROUP A6 VS. GROUP B6

VAR52; VAR53; VAR54 vs. VAR152; VAR153; VAR154 D1, D2, D3 vs. D1, D2, D3 Hotelling T-Square: Two Independent Variable Equal Variance with Multiple Related Measures

Hotelling T2 2.85372 F Statistic 0.90484 P -value 0.44753 Null hypothesis tested is that there is zero difference between all the related variables compared across the two groups. Covariance GROUP 1 VAR52 VAR53 VAR54 VAR52 0.00000 0.00000 0.00000 VAR53 0.00000 15.56621 13.61660 VAR54 0.00000 13.61660 17.73419 Covariance GROUP 2 VAR152 0.23947 -0.26711 -1.00395 VAR153 -0.26711 9.35461 10.39408 VAR154 -1.00395 10.39408 15.11776 Covariance POOLED VAR152 0.11098 -0.12378 -0.46524 VAR153 -0.12378 12.68766 12.12324 VAR154 -0.46524 12.12324 16.52170 We conclude that: • The results indicate that no perceivable differences exist between the Less Info and More Info groups in the Pre experiment stage (comparing all subelements of group A to all subelements of group B). • When comparing the Less Info Pre-experiment group against the Post-experiment group, we see a statistically significant difference among the responses. The trend seems to be that more difference is shown between group A (Less Info) and group C (Post-experiment) than between group B (More Info) and group C. • In addition, the significance is higher for Direct-Control sys tems than Remote-Control systems, which in turn, is more significant than Autonomous systems.

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Defense ARJ, January 2021, Vol. 28 No. 1 : 2-39