On a Recent English Exam,scores Averaged 84 Points

question 65

Multiple Choice

On a recent English exam,scores averaged 84 points.If 41% of scores fell below 70 points,find an approximate standard deviation (assuming the Normal model is appropriate) .

• A)60.87
• B)-69.57
• C)-669.57
• D)34.44
• E)28.7

---

Definitions:

Brass Section

A subsection within a band or an orchestra comprised of brass instruments such as trumpets, trombones, French horns, and sometimes tubas.

Induction

Induction is a method of reasoning that involves drawing general conclusions from specific observations or instances.

Deduction

The process of reasoning from one or more general premises to reach a logically certain conclusion.

Analogy

A comparison between two things, typically for the purpose of explanation or clarification.