A Truck Company Wants On-Time Delivery for 98% of the Parts

Multiple Choice

A truck company wants on-time delivery for 98% of the parts they order from a metal manufacturing plant. They have been ordering from Hudson Manufacturing but will Switch to a new, cheaper manufacturer (Steel-R-Us) unless there is evidence that this New manufacturer cannot meet the 98% on-time goal. As a test the truck company Purchases a random sample of metal parts from Steel-R-Us, and then determines if These parts were delivered on-time. Which hypotheses should they test?

A) $\begin{array} { l } H _ { 0 } : p < 0.98 \\H _ { a } : p > 0.98\end{array}$
B) $\begin{array} { l } H _ { 0 } : p > 0.98 \\H _ { a } : p = 0.98\end{array}$
C) $\begin{array} { l } H _ { 0 } : p = 0.98 \\H _ { a } : p < 0.98\end{array}$
D) $\begin{array} { l } H _ { 0 } : p = 0.98 \\H _ { a } : p \neq 0.98\end{array}$
E) $\begin{array} { l } H _ { 0 } : p = 0.98 \\H _ { a } : p > 0.98\end{array}$