The Chair of the Operations Management Department at Quality University

question 85

Multiple Choice

The chair of the operations management department at Quality University wants to construct a p-chart for determining whether the four faculty teaching the basic P/OM course are under control with regard to the number of students who fail the course. Accordingly, he sampled 100 final grades from last year for each instructor, with the following results: $$\begin{array} { l c } \text { Instructor } & \text { Number of Failures } \\\hline \text { Prof. A } & 13 \\\text { Prof. B } & 0 \\\text { Prof. C } & 11 \\\text { Prof. D } & 16\end{array}$$ What is the estimate of the standard deviation of the sampling distribution for an instructor's sample proportion of failures?

• A) .0075
• B) .03
• C) .075
• D) .3
• E) .75

---

Definitions:

tRNA

Transfer RNA, a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein during protein synthesis.

Protein-synthesizing Machinery

The cellular components, including ribosomes, tRNA, and mRNA, responsible for the synthesis of proteins.

Base-pair Substitution

A type of genetic mutation where one nucleotide base is replaced by another, leading to changes in the DNA sequence.

Sickle Cell Anemia

A genetic blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape, leading to severe pain and potential organ damage.