The JMP output shows the estimate of factor A at two levels (-1) and (+1) as A[-1]=0.04. What is the correct interpretation of this result?

a.

The effect of factor A going from level (+1) to (-1) is 0.08.

b.

The effect of factor A going from level (+1) to (-1) is 0.04.

c.

The factor A is statistically significant because it is <0.05

d.

The effect of factor A going from level (-1) to (+1) is 0.08.