SOLUTION: Assume that the test has 8 true/false questions, and 11 multiple choice questions (4 options per questions), each with exactly one correct answer. If a student guesses randomly o

Question 1135380: Assume that the test has 8 true/false questions, and 11 multiple choice questions (4 options per questions), each with exactly one correct answer.
If a student guesses randomly on each question, what is her expected score?
Answer by Glaviolette(140) (Show Source): You can put this solution on YOUR website!
Since she has a 50% chance of guessing the true/false correct, she would be expected to get 4 correct (.5*8). She has a 25% chance of guessing the multiple choice correct. .25 * 11 = 2.75. Therefore, her expected score is 4 + 2.75 = 6.75
RELATED QUESTIONS
A test has 20 questions worth 100 points. The test consists of True/False questions worth (answered by Boreal)

A test has twenty questions worth 100 points. The test consists of true/false questions... (answered by jorel1380)

A test has twenty questions worth 100 points. The test consists of True/False questions... (answered by greenestamps)

A quiz has 7 true/false questions. 8 multiple choice with 3 options each. How many... (answered by richwmiller)

Jack's online test has 8 true-false questions and 7 multiple-choice questions. Each... (answered by Edwin McCravy)

A test include the following components 8 true- false questions; five multiple-choice... (answered by stanbon)

Hi. A quiz has five true-false questions and 3 multiple choice questions with 4... (answered by edjones)

An exam has 5 True and False questions, followed by 6 multiple choice questions each with (answered by Boreal)

A test has 20 questions worth 100 points. The test consists of true and false questions... (answered by TimothyLamb)