A Firm Is Studying the Effect of Work Shift and Parts

question 122

Multiple Choice

A firm is studying the effect of work shift and parts supplier on its defect rate (dependent variable is defects per 1000) . The resulting ANOVA results are shown below (some information is missing) . $$\begin{array} { | l | c | c | c | c | c | } \hline \text { Source } & \text { Sum of Squares } & \text { df } & \text { Mean Square } & F & \text { P-Value } \\\hline \text { Shift } & 704.07 & 2 & 352.04 & 11.93 & 0.001 \\\hline \text { Supplier } & 19.6 & & 9.8 & 0.33 & 0.720 \\\hline \text { Shift*Supplier } & 430.75 & 4 & 107.69 & 3.65 & 0.014 \\\hline \text { Error } & 1062.05 & 36 & 29.5 & & \\\hline \text { Total } & 2216.47 & 44 & & & \\\hline\end{array}$$ At ? = 0.01, the effect of supplier is:

• A)clearly significant.
• B)just barely significant.
• C)almost but not quite significant.
• D)clearly insignificant.

---

Definitions:

Payment Terms

Conditions under which a seller will complete a sale, typically specifying the period allowed to a buyer to pay off the amount due.

Invoice

A document issued by a seller to a buyer, listing goods or services provided and expressing the amount due for payment.

Outstanding Balance

The total amount of money owed that has not yet been paid off.

Cheque

A written, dated, and signed instrument that directs a bank to pay a specific sum of money to the bearer or a named party.