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Table 6 T test of choice of light bulb responses by international knowledge

From: Environmental consciousness and choice of bulb for lighting in a developing country

Group (knowledge of climate change)

Obs.

Mean

Std. err.

Std. dev.

[95% conf. interval]

No

620

.8209677

.0154093

.3836889

.7907069

.8512286

Yes

984

.8973577

.0096799

.3036454

.8783622

.9163533

Combined

1604

.8678304

.0084589

.3387807

.8512387

.8844222

Difference

 

− .07639

.0172714

 

− .1102669

− .0425131

diff = mean(0) − mean(1)

 

t = − 4.4229

Ho: diff = 0

 

Degrees of freedom = 1602

Ha: diff < 0

Ha: diff! = 0

Ha: diff > 0

Pr(T < t) = 0.0000

Pr(|T| > |t|) = 0.0000

Pr(T > t) = 1.0000

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Energy, Sustainability and Society

ISSN: 2192-0567

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