Question

Do various occupational groups differ in their diets? A British study of this question compared 89 drivers and 69 conductors of London double-decker buses. The conductors' jobs require more physical activity. The article reporting the study gives the data as "Mean daily consumption ± (se)." Some of the study results appear below.

	Drivers	Conductors
Total calories	2815 ± 40	2848 ± 45
Alcohol (grams)	0.27 ± 0.06	0.4 ± 0.05

Question:Is there significant evidence at the 5% level that conductors consume more calories per day than do drivers? Use the pooled two-sample t test to obtain the P-value. (Give answers to 3 decimal places.)

A) t=

B) df=

C) P-value=

Answer 1

Edited answer :