.a) If Maria does not know the correct answer to a question, is it to her advantage or disadvantage to guess at an answer?b) If she can eliminate one of the possible choice, is it to her advantage or disadvantage to guess at the answer?

.a) If Maria does not know the correct answer to a question, is it to her advantage or disadvantage to guess at an answer?b) If she can eliminate one of the possible choice, is it to her advantage or disadvantage to guess at the answer?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

Maria is taking a multiple choice exam in which there are five possible answers for each question. The instructions indicate that she will be awarded 2 points for each correct response, that she loses 1/2 point for each incorrect response and that no points will be added or subtracted for answers left blank.a) If Maria does not know the correct answer to a question, is it to her advantage or disadvantage to guess at an answer?b) If she can eliminate one of the possible choice, is it to her advantage or disadvantage to guess at the answer?

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