Question

Do various occupational groups differ in their diets? A British study of this question compared 94 drivers and 52 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	2820 ± 41	2840 ± 50
Alcohol (grams)	0.3 ± 0.07	0.36 ± 0.06

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.) df= 144 p-value is .995

t=?

I can tell you that T does not equal -2.463, 2.463, or .309 trying it many different ways. please show how to find T

Answer 1

Drivers conductors 2820.000 x2 41.000 z 94.000 n2 S1 52.0000 pool. var sp((n-1)s'n1)s2)/In,+n-2) 1971.0625 Point estimate 20.0000 std error of difference-se- Sp (1/n1+1/n2) 7.673 test stat t = (xi-X-42)/Se

from above test statistic t =2.607 ( please try with negative sign if this comes correct as -2.607 and revert)