Question

Find the indicated binomial probability. A multiple choice test has 10 questions each of which has...

Find the indicated binomial probability.

A multiple choice test has 10 questions each of which has 4 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

X=number of questions answered correctly

X follow binomial with n=10 and P= (1/4)

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A student randomly guesses at 5 multiple choice questions. Find the probability that the student guesses...
A student randomly guesses at 5 multiple choice questions. Find the probability that the student guesses 3 or more correctly. Each question has 8 possible answers with only one correct answer, and each question is independent of every other question. (Round to the nearest ten thousandths. I.e. 4 decimal places. Use the Binomial)
In a game show, a participant is asked ten multiple-choice questions. Each question has five possible...
In a game show, a participant is asked ten multiple-choice questions. Each question has five possible answers with only one of these answers being correct. A participant wins a prize if they correctly answer seven or more of the questions. Assuming that the answer to each question is independent from each other, answer the following: a) What is the probability that a participant who guesses blindly at all of the questions gets exactly seven correct answers? b) What is the...
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?...
A test consists of 10 multiple choice questions, each with five possible answers, one of which...
A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a student must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test? Please show work
On a multiple-choice test with nine questions, each question has for possible answers, one of which...
On a multiple-choice test with nine questions, each question has for possible answers, one of which is correct. For students who gets it all answers, find the variance for the number of correct answers.
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?
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...
A multiple-choice test consists of eight questions, each of which has four choices. Each question has...
A multiple-choice test consists of eight questions, each of which has four choices. Each question has exactly one correct answer. William guesses randomly at each answer. What is the probability that he gets six or fewer questions correct? (Round your answer to four decimal places.)
A student has just been given a 10-question multiple-choice quiz. Each question has five answers, of...
A student has just been given a 10-question multiple-choice quiz. Each question has five answers, of which only one is correct. The student has not attended class recently, and doesn't know any of the answers. Assume that guesses are made on all ten questions, find the indicated probability. (Round your answer to three decimal places.) What is the probability that the student will answer all questions incorrectly?
MC1701: A test consists of 10 multiple choice questions, each with five possible answers, one of...
MC1701: A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass, a student must get at least 6 correct on the test. If a student randomly guesses at every question, what is the probability that the student fails the test? a. 2.6% b. 20% c. 80% d. 97.4% e. 99.4% f. None of these
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT