Professors at a Local University Earn an Average Salary of $80,000

question 142

Multiple Choice

Professors at a local university earn an average salary of $80,000 with a standard deviation of $6,000. The salary distribution is approximately bell-shaped. What can be said about the percentage of salaries that are less than $68,000 or more than $92,000?

• A) It is about 5%.
• B) It is about 32%.
• C) It is about 68%.
• D) It is about 95%.

---

Definitions:

Conjunction

In grammar, a conjunction is a part of speech that connects words, sentences, phrases, or clauses.

Disjunction

A logical function that results in true when any one or more of the inputs are true.

Biconditional

A logical connective expressing the idea that two statements are true or false simultaneously.

Conjuncts

Elements combined within a conjunction in logic, each of which is true for the whole to be true.