Question

16. Blind Guessing: Suppose that, on a 10-question quiz, you need to get at least 7...

16. Blind Guessing: Suppose that, on a 10-question quiz, you need to get at least 7 correct to pass. Suppose also that, because you have not studied any of the material, you can only blindly guess the answers. Please answer the following questions: If all ten questions are true/false, what is the probability of correctly guessing 7 or more? If all ten questions are multiple choice, each having four answers, what is the probability of correctly guessing 7 or more?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a) A student has just been given a 7-question multiple-choice quiz in their anatomy class. Each...
a) A student has just been given a 7-question multiple-choice quiz in their anatomy class. Each question has five answers, of which only one is correct. Since this student has not attended any classes recently, they do not know any of the answers and must guess on all 7 questions. What is the probability they will get at least one question correct? a. 0.7903 b. 0.8154 c. 0.3670 d. 0.1429 b) A student has just been given a 7-question multiple-choice...
On a certain statistics exam, there are 9 multiple choice questions. Each question has 5 possible...
On a certain statistics exam, there are 9 multiple choice questions. Each question has 5 possible answers to choose from (and only 1 correct answer). Suppose you didn’t study at all and are planning on guessing the correct answer for each question. Therefore, the probability of guessing a question correctly is ___________ . (Round to two decimals)   Let X = number of questions the student guesses correctly (Round all answers to four decimals) a)      What’s the probability you guess at...
2.10 Guessing on an exam: In a multiple choice exam, there are 7 questions and 4...
2.10 Guessing on an exam: In a multiple choice exam, there are 7 questions and 4 choices for each question (a, b, c, d). Nancy has not studied for the exam at all and decides to randomly guess the answers. What is the probability that: (please round all answers to four decimal places) a) the first question she gets right is question number 3? b) she gets all of the questions right? c) she gets at least one question right?
In a ten question multiple choice (4 options) quiz on FunTrivia, you have a chance of...
In a ten question multiple choice (4 options) quiz on FunTrivia, you have a chance of roughly 0.0000954% to get all ten questions right guessing at random. How is this number calculated?
Nigel has just been given a twenty question multiple choice quiz where there are four possible...
Nigel has just been given a twenty question multiple choice quiz where there are four possible answers to each question. Unfortunately for Nigel, he has not studied and consequently must guess the answer to each question. a. What is the probability that he will answer at least 70% of the questions correctly?
In a statistics class, Maya takes a multiple-choice quiz. There are 10 questions. Each question has...
In a statistics class, Maya takes a multiple-choice quiz. There are 10 questions. Each question has five possible answers. Maya will pass the test if she studies so that she has a 75% chance of answering each question correctly. Let x be the number of of correct answers. (Round probabilities to 4 decimal places) a. Define the Random Variable, x ~ b. What is the PDF formula? c. Find the probability that Maya answers exactly 4 of the questions correctly?...
. An instructor is considering different possible styles for an upcoming quiz. In each case, calculate...
. An instructor is considering different possible styles for an upcoming quiz. In each case, calculate the probability that a student just guessing gets at least 70% of the quiz correct: (a) The quiz has ten questions that are all answered “True” or “False.” (b) The quiz has ten questions, multiple choice, with choices (a), (b), (c), or (d) (c) The quiz has ten questions, multiple choice, with choices (a), (b), (c), (d), or (e) (d) The quiz requires the...
2. You are taking a 33 question multiple choice test, each question with 4 choices. Assume...
2. You are taking a 33 question multiple choice test, each question with 4 choices. Assume that getting 23 questions or more, correct, will result in a passing grade on the test. Complete parts (a), (b), and (c). (a) If you randomly guess on a single question, what is the probability that you will get that question correct? (b) If you randomly guess on all 33 questions, what is the probability that you will pass? (c) About what number of...
You are planning to guess on a multiple-choice 10 question quiz. Each question has five options...
You are planning to guess on a multiple-choice 10 question quiz. Each question has five options and you are just as likely to guess any of them. But only one option is correct. Your guess on a question does not affect your guess on any other. What is the probability that you will guess at least 6 questions correct?
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has...
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended class recently, he doesn't know any of the answers. Assuming that Richard guesses on all ten questions, find the indicated probabilities. (Round your answers to three decimal places.) What is the probability that Richard will answer at least half the questions correctly?