Louis Tang, a Cost Accountant at Prime Plastics, Inc $\alpha$ = 005, Louis Should ___

Louis Tang, a cost accountant at Prime Plastics, Inc.(PPI) , is analyzing the manufacturing costs of a moulded plastic telephone handset produced by PPI.Louis's independent variable is production lot size (in 1,000's of units) , and his dependent variable is the total cost of the lot (in $100's) .Regression analysis of the data yielded the following tables: Using $\alpha$ = 0.05, Louis should ___.

A) increase the sample size
B) suspend judgment
C) not reject H₀: $\beta$ ₁ = 0
D) reject H₀: $\beta$ ₁ = 0
E) do not reject H₀: $\beta$ ₀ = 0