At the End of Their Final Exam,550 Students Answered an Additional

question 18

Multiple Choice

At the end of their final exam,550 students answered an additional question in which they rated their instructor's teaching effectiveness,with the following results. $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Student's Rating of Instructor }$
$\begin{array} { | c | c | c | } \hline \begin{array} { c } \text { Student's } \\\text { Final Grade }\end{array} & \text { Very or Somewhat Effective } & \text { Very or Somewhat Ineffective } \\\hline \text { A } & 190 & 85 \\\hline \text { B } & 75 & 120 \\\hline \text { C } & 20 & 17 \\\hline \text { D } & 9 & 18 \\\hline \text { F } & 1 & 15 \\\hline\end{array}$
What proportion of the students who rated their instructor as very or somewhat effective received a B or better in the class?

• A)0.345
• B)0.254
• C)0.482
• D)0.898
• E)0.644

---

Definitions:

Multiplier

In economics and finance, a factor that quantifies the impact of an increase in spending or investment on the overall income or output of an economy, often used to measure the effects of fiscal policy.

Dollars

The official currency of the United States, used as a standard monetary unit.

Annual Risk-free Rate

The theoretical rate of return of an investment with zero risk over a one-year period, often represented by government bonds.

Futures Price

The price at which a futures trader commits to make or take delivery of the underlying asset.