Purchase Solution

Multiple Choice Test-Taking Strategy

Not what you're looking for?

Ask Custom Question

In a multiple-choice test, each question has five options. Students will get 4 points for each correct answer; lose 2 points for each incorrect answer; and receive no points for unanswered questions. A student does not know the correct answer for one question. Is it to her advantage or disadvantage to guess an answer? Show your calculations for expected value. Show your work for full credit.

Purchase this Solution

Solution Summary

For a given point deduction for answering incorrectly, we use probability theory to determine whether it is in the best interest of a test-taker who does not know the correct answers to guess randomly.

Solution Preview

No, it is not to the student's advantage to answer the question. She has a 20% chance of getting the ...

Purchase this Solution

Free BrainMass Quizzes
Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

Probability Quiz

Some questions on probability