Hi All,
I am fitting a fourth degree polynomial to a dataset. The equation is.
y = b0 +b1x+ b2x^2 + b3x^ + b4x4 + e
Typically, we null tested is "Ho: b1=b2=b3=b4=0"
However, I want to test if the coefficients are not zero "Ho: b3=b4=0"
How do we do this using JMP 15 custom test?
Thanks