Manure added farms

Non-manure farms

Mean

0.52

0.148

Variance

0.022

0.01052

Observations

5

5

Hypothesized Mean Difference

0

df

7

t Stat

4.612673061

P (T ≤ t) one-tail

0.001223615

t Critical one-tail

1.894578605

P (T ≤ t) two-tail

0.002447229

t Critical two-tail

2.364624252