Saturday

April 18, 2015

April 18, 2015

Number of results: 158,506

**statistics**

A multiple choice test has 20 questions with each having 4 possible answers with one correct. Assume a student randomly guesses the answer to every question. 1) What is the probability of getting exactly 9 correct answers? 2)What is the probability of getting less than 9 ...
*March 23, 2010 by please help me!*

**advanced statistics**

suppose a student takes a multiple choice test with 10 questions. suppose each question has 4 possible answers. if the student guesses randomly on each questions,what is the probability that the student gets exactly 6 correct? less than 7 are correct?
*November 16, 2012 by anonymous*

**Math**

10 multiple choice questions each with three possible answers only one of which is correct. A student guesses the answer to every question. (a)What is the probability that the student will answer the first six questions correctly and the rest incorrectly? (b)What is the ...
*April 7, 2010 by Kim*

**Statistics**

A multiple choice test consists of 60 questions. Each question has 4 possible answers of which one is correct. If all answers are random guesses, estimate the probability of getting at least 20% correct? Trouble with deciding p, n, q, and P (X)
*October 8, 2010 by Lori*

**Statistics**

A student guesses blindly on a 20-question multiple choice test. If each question has 4 answer choices (only one of which is correct), what is the probability that the student will answer exactly 10 questions correctly?
*February 20, 2015 by Sierra*

**stats**

a student randomly guesses at five multiple-choice questions, each question has five possible choices (suppose the choice for each question is independent): a) Find the probability that the student gets exactly three correct. b) What is the probability that the student gets ...
*March 31, 2012 by jeanette*

**LBCC**

A multiple choice quiz consists of 20 questions, each with 3 possible equally likely answers. If a student guesses at the answer to each question, then the mean number of correct answers selected by the student is?
*April 7, 2013 by Lynn*

**Math**

A student guesses on every ??? of a multiple choice test that has 9 quetions, each with 3 possible answers. what's the probability the student will get at least 7 of the questions right?
*February 10, 2010 by Reta*

**Statistics**

There are 100 questions from a SAT test, and they are all multiple choice with possible answers of a,b,c,d,e for each question only one answer is correct. Find the mean number of correct answers for those who make random guesses for all 100 questions?
*February 13, 2014 by Karen*

**statistics**

10. A student is taking a multiple choice test where each question have 5 possible answers of which only one is right. If the student knows the answer the student answers correctly, otherwise there is a 20% probability of correct answer. Assume the student knows 70% of the ...
*September 12, 2012 by mutinda*

**statistics**

A student is taking a multiple choice test where each question have 5 possible answers of which only one is right. If the student knows the answer the student answers correctly, otherwise there is a 20% probability of correct answer. Assume the student knows 70% of the ...
*September 12, 2012 by erick*

**stat probability**

A multiple choice quiz consists of 20 questions, each with 3 possible equally likely answers. If a student guesses at the answer to each question, then the mean number of correct answers selected by the student is?
*April 8, 2013 by Lynn*

**Elementary Statistics**

There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each question, only one answer is correct, find the standard deviation for the numbers of correct answers for those who make random guesses for all 100 questions.
*April 11, 2014 by Confused*

**Math**

a 10 question multiple choice test has 4 possible answer for each question. A student selects at least 6 correct answers. Find probability of this event: (multiple choice) A) .118 B) .995 C) .068 D) .571
*December 13, 2011 by Matt Borchelt*

**Statistics**

A student makes random guesses on 6 multiple-choice questions. One of the 5 choices in each question is correct. What is the probability that the student will get at most 4 answers right?
*October 21, 2014 by MM*

**Data Management **

In a multiple choice test that contains ten questions with each question having five possible answers, what is the probability that Colin will pass the test if he merely guesses at each question?
*May 22, 2014 by Scott*

**Finite Math**

A biology quiz consists of 10 multiple -choice questions. 7 must be answered correctly to receive a passing grade. If each question has 4 possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question will pass the...
*October 8, 2012 by Toni*

**math**

A multiple-choice test has 10 questions. Each question has 5 choices. If a student answers each question by guessing randomly, find the probability that the student gets: a) at most 4 questions correct b) at least 7 questions correct Please show your work.
*May 23, 2011 by corey*

**Math**

A multiple-choice test has four possible answers for each question. If a student guesses at the answer, what is the probability that he or she selects the correct answer
*November 1, 2012 by Pamela Straw*

**stats**

a test consists of 25 multiple choice questions. Each has 5 possible answers, which only one is correct. If a student guesses on each question, find the following: a) prob that he will guess all of them right b)prob that he will guess at most 12 right c) prob that he will ...
*February 18, 2011 by gio*

**Statistics**

A student is taking a multiple-choice exam with 16 questions. Each question has five alternatives. If the student guesses on 12 of the questions, what is the probability she will guess at least 8 correct? Assume all of the alternatives are equally likely for each question on ...
*May 14, 2008 by Christine*

**statistics**

A multiple choice exam has 20 questions; there are four choices for each question. A student guesses the answer to every question. Find the chance that he guesses correctly between four and seven times. Find the minimum score the instructor can set so that the probability that...
*February 10, 2014 by m*

**Binomial Distribution**

A biology quiz consists of twelve multiple-choice questions. Eight must be answered correctly to receive a passing grade. If each question has five possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question ...
*April 18, 2012 by Price*

**MATH Prob.**

Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 3 possible answers.
*August 8, 2009 by Twg*

**Statistics**

Astudent makes random guesses on 6 multiple-choice questions. One of the 5 choices in each question is correct. What is the probability that the student will get at most 4 answers right?
*October 21, 2014 by M-M*

**Stats**

A student takes a 32 question multiple choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student guesses more than 75% of the questions correctly. (Round your answer to three ...
*November 1, 2012 by Madmistro*

**MATH Prob.**

Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 3 possible answers. A) 4/3 B) 1/81 C)1/64 D)3/4 I automatically think D.
*August 9, 2009 by Twg*

**elementary stats**

On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.
*February 23, 2012 by Rose Bud*

**probability and statistics**

a multiple choice test onsists of 8 questions, each with 4 possible answers but only one of which is correct.what is the probability that an unprepared student will, by chance, get, a. all correct answers, b. exactly 5 correct answers, c. at most 4 correct answers, d. at most ...
*March 12, 2014 by marie*

**probability**

a multiple choice test consists of 8 questions, each with 4 possible answers but only one of which is correct.what is the probability that an unprepared student will, by chance, get, a. all correct answers, b. exactly 5 correct answers, c. at most 4 correct answers, d. at most...
*March 12, 2014 by marie*

**Math**

Given a multiple choice test with 4 choices for each question and 17 questions, What are the odds of getting all 17 questions incorrect? Each question has one correct answer--So 75% per question, but how about the entire test?
*September 11, 2007 by Mary Anne*

**math-Probablity **

A student is writing a multiple choice test consisting of 40 questions, each of which provides four possible choices. He is certain that he has 16 questions correct. If he guesses for all of the remaining 24 questions, what is the probability that he will pass the test?
*June 5, 2012 by demi*

**PROBABILITY MATH**

Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 5 possible answers. Explain to me the answer?
*November 9, 2011 by HM*

**statistics **

A test consists of 12 multiple choice questions with 5 choices for each question. As an experiment, you GUESS on each and every answer without even reading the questions. Probability of getting less than 4 questions correct on this test is:
*May 20, 2014 by Ned*

**math**

a multiple choice test has 8 questions with 4 possible answers for each question. if a student were to guess the answer to each question how many different ways would there be to answer the test A. 32 B. 4 C. 65 536 D. 4 096
*May 24, 2011 by steve*

**math**

Beth Dahlke is taking a ten question multiple choice test for which each question has three answer choice only one of which is correct. Beth decides on answers by rolling a fair die and making the first answer choice if the die shows 1 or 2 the second if it showes 3 or 4 and ...
*November 19, 2012 by Katarzyna*

**math**

Beth Dahlke is taking a ten question multiple choice test for which each question has three answer choice only one of which is correct. Beth decides on answers by rolling a fair die and making the first answer choice if the die shows 1 or 2 the second if it showes 3 or 4 and ...
*November 20, 2012 by Andrew*

**Math**

On a true-false test, each question has exactly one correct answer: true, or false. A student knows the correct answer to 70% of the questions on the test. Each of the remaining answers she guesses at random, independently of all other answers. After the test has been graded, ...
*April 29, 2013 by Snehan*

**math (stats)**

A biology professor gives a surprise quiz consist of a true/false question followed by a multiple choice question with four possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Please show your work.
*January 23, 2012 by juan777*

**statistics**

A test consist of 10 multiple choice questions, each with five possible answers, one of which is correct. To past the test a student must get 60% or better
*April 4, 2015 by pat*

**Statistic**

A quiz consists of 10 multiple-choice questions. Each question has 5 possible answers and only one of them is correct. A student has not studied for the quiz and will pick his answers randomly. 1)Define the random variable x that will be used for problem, and give the ...
*March 1, 2015 by Amriajasmine*

**statistics**

Richard has been given a 5-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn't know any of the answers. The success occurs if Richard answers a question...
*November 9, 2010 by Anonymous*

**English for john browm**

Let me give you something on "multiple-choice" items that may help you to guess better. Many teachers prepare multiple-choice tests because they are easy to mark and offer the student the advantage of actually seeing what the correct answer is. There are important strategies ...
*May 7, 2009 by SraJMcGin*

**statistics**

Test consist of 10 multiple choice questions each having 4 possible answers one being correct. you guessed all 10 what is the probability of getting less than 30%
*July 13, 2013 by janice *

**Stats**

You are taking a multiple choice test that has 20 questions with 4 possible answers each. You randoming quess each answer. What is the probality of getting 7 questions correct?
*May 1, 2010 by Bernice*

**Probability**

You are taking a multiple choice test that has 20 questions with 4 possible answers each. You randoming quess each answer. What is the probality of getting 7 questions correct?
*May 1, 2010 by ryan*

**psychology statistics for behavioral sciences**

A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for the entire test? c. ...
*March 20, 2013 by gina*

**Math**

A multiple - choice quiz contains 5 questions with 4 choices for each answer. A student passes the quiz if they get at least an 80% on the quiz . If a student guesses on every question , find the probability that she passes the quiz . I have tried c(20,8)(1/4)^8(3/4)^12 c(20,9...
*February 28, 2015 by Kaela*

**Stats**

An instructor gives a test with 20 multiple choice questions. There are 4 responses per questions and only one choice correct. The test also has 30 True/False questions. Determine the probability a student randomly guessing on all questions and correctly answering no more than...
*March 31, 2011 by Lacey*

**Statistics**

Find the probability of correctly answering the first 2 questions on a multiple choice test if random guesses re made and each question has 6 possible answers. My answer is 1/36 Assume that the data has a normal distribution and the number of observations is greater than 50. ...
*December 4, 2006 by Sue*

**Statistics**

On a very short quiz, there is one multiple choice question with 5 possible choices (a, b, c, d, e) and one true or false question. Assume you are taking the quiz but do not have any idea what the correct answer is to either question. You mark an answer to each question anyway...
*July 8, 2011 by Cassie*

**Statistics**

Richard has been given a 5-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct. Since Richard has not attended the class recently, he does not know any of the answers. The success occurs if Richard answers a question...
*June 15, 2010 by Jacob*

**statistic **

A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for the entire test? c. ...
*January 27, 2013 by Nickie*

**Statistics**

A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at random, independently of ...
*May 6, 2013 by AmmanJordan*

**math**

In an examination a candidate is given the four answers to four questions but is not told which answer applies to which question. He is asked to write down each of the four answers next to its appropriate question. b). show that there are 6 ways of getting just two answers in ...
*June 30, 2014 by Heidi*

**Math (statistics)**

In an examination a candidate is given the four answers to four questions but is not told which answer applies to which question. He is asked to write down each of the four answers next to its appropriate question. b). show that there are 6 ways of getting just two answers in ...
*July 8, 2014 by Heidi*

**statistic**

A statistics quiz consists of 10 multiple questions. There are four choices for each question. One student is unprepared and decides to guess the answers to every question. Assuming 70% is a passing grade, find the probability that the student will pass the quiz.
*March 28, 2015 by Anonymous*

**statistics**

There is a multiple choice exam with 24 questions, and five options each. If i guess every question, what is the probability that i will get exactly 15 correct.
*March 17, 2015 by ben*

**Statistics**

I don't mind you showing me the caluclator key strokes to do this or show me the mathematical way whice ever thanks Here is a simple probability model for multiple-choice tests. Suppose that a student has probability p of correclty ansering a question chosen at random form a ...
*January 26, 2010 by Kate*

**Statistics**

Sarah took a Statistics midterm which consisted of 13 multiple choice questions. Each question had 6 possible response options. Sarah answered 8 of the 13 questions correctly. Assume that Sarah had the same probability of getting each question correct. What is the most likely ...
*February 19, 2011 by Eric*

**statistic**

Quiz has 6 questions. Each question has five possible answers, only one of each 5 answers is correct. If student randomly guesses on all six questions, what is the probability to answer 2 questions right? Tip: first, you have to define parameters of Binomial distribution: n - ...
*December 4, 2010 by tanya*

**Math**

On a multiple choice test you guess he answers to two questions. Each question has five choices. What is the probability that you both answers correct?
*March 24, 2011 by Sophiee*

**math**

A professor gave his 40 students a test with three questions. Every student answered at least one question. Ten student did not answer the first question, 14 did not answer the second question, and 12 did not answer the third question. If 18 students answered all three ...
*April 13, 2015 by Excel*

**Math**

On a multiple-choice test you randomly guess the answers to two questions. Each question has five choices. What is the probability that you get both answers correct?
*March 24, 2011 by PrettyPlzHelp*

**Math**

What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question
*April 22, 2013 by Praphul*

**Math**

What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question
*April 22, 2013 by Praphul*

**math**

What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question
*April 24, 2013 by Praphul*

**Math**

In a multiple-choice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point 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 ...
*July 19, 2011 by Jen*

**Math**

In a multiple-choice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point 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 ...
*July 20, 2011 by Jen*

**Statistics**

A multiple choice test has five choices. Therefore the probability of getting the correct answer by guessing is 0.2. The test has six questions. Use the binomial formula with n = 6 and p = 0.2 to (a) Determine probability of getting two questions correct. (b)Determine ...
*March 3, 2013 by Sue*

**Math-probability**

In a multiple-choice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point 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 ...
*July 20, 2011 by Jen*

**prealgbra**

solve by simulating the problem.you have a 5 -question multiple -choice test. each question has four chices. you dont know any of the answers. what is the experimental probility that you will guess exactly three out of five question correctly?
*June 28, 2012 by sandr*

**Probability**

Mary took a 20 question multiple-choice exam where there are 4 choices for each question and only 1 of those choices is correct. Rather than reading the question, Mary simply puts a random choice of answer down for each question. Determine the probability that Mary gets ...
*January 5, 2013 by John*

**Ivytech**

There are 7 multiple choice questions on an exam, each with 4 possible answers. If you are guessing, so that you are likely to choose 1 sequence of answers as another, what is the probability of getting all 7 answers correct?
*February 5, 2014 by Cresha*

**Math**

I need help with the second question: A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? Answer is 1/5 What is the probability that the student will answer...
*November 19, 2011 by Tanya*

**statistics**

A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? What is the probability that the student will answer the first question incorrectly?
*November 19, 2011 by Tanya*

**Math**

A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? What is the probability that the student will answer the first question incorrectly?
*November 19, 2011 by Tanya*

**math-binomial prob**

I do not understand the binomial theorem. One of my questions is "there are 5 mutiple choice questions with 4 possible answers each. What is the probability of getting more than 3, exactly 3, and less than 3 correct?" Thanks for any help:)
*December 14, 2007 by Danielle*

**Finite Math**

A quiz consists of 10 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 40 %
*May 23, 2011 by Anonymous*

**math**

student is taking up midterm exam for 3 minutes left to answer 10 remaining question of which there are 4 choices of answers for each question with only one choice correct. what is the probability of getting more than 5 of his answer is correct
*July 9, 2014 by bern*

**Statistics**

You have a ten question multiple choice test in your next class and you did not study at all. Each question has four choices and only one correct answer. You are going to guess on each question. What is the probability that you score at least a 20% on the test.
*May 7, 2013 by Liz*

**Maths**

A true/ false test is given. If a person guesses the answers, the probability that any particular question is correctly answered is 0.5. If the test contains 14 questions and 7 correct answers is a pass, what is the probability of passing the test by simply guessing?
*February 13, 2014 by Lucy*

**Statistics**

Please help. Find the probability of getting 2 hearts if the cards are drawn from a regular deck and the first card is not replaced. A true/false quiz consists of twenty questions. If a student answers the twenty questions by making random guesses, what is the probability of ...
*December 11, 2006 by Mary*

**To Bill -- psychology**

I've removed your 20-question, multiple choice post. Your instructor assigned this exercise/test to find out what YOU know. If you have a problem with a couple of the questions, please post them along with your thoughts about possible answers. Then we'll try to help you.
*January 26, 2009 by Ms. Sue*

**math**

11. A Certification Exam containing 20 true and false questions. If a student guesses at the answer to each question, what is the probability that she/he will get exactly 14 correct?
*March 7, 2014 by Anonymous*

**Probability/Statistics**

A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 70 %. I'm not sure what to do. I figured that there's 10 questions, each ...
*July 11, 2009 by Amy*

**statistics**

a test consists of true/false questions .to pass the test a student must answer at least 6questions correctly .if a student guesses on each question,what is the probability that the student will pass the test
*December 5, 2009 by AILY*

**algbrea**

Francine and Cheryl received equal scores on a test made up of multiple choice questions and an essay. Francine got 34 multiple choice questions correct and received 14 points for her essay. Cheryl got 30 multiple choice questions correct and received 22 points for her essay...
*September 29, 2014 by jace*

**Math/Prob**

Claire takes a five-question true-false test. She hasn't studied, so she guesses at random. With her ESP she figures she has a 60% probability of getting any one answer wrong. A. What is the probability of getting an answer wrong? (Do you think they want me to ignore the ESP ...
*May 23, 2012 by Ben*

**Statistics**

A test consists of 90 mulitiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers.
*March 13, 2011 by chalulu*

**math**

you take a three-question multiple-choice test.each question has four choices.you dont know any of the answers. what is the experimental probability that you will guess exactly two out of three correctly please help me i am confused
*April 21, 2010 by Katherine*

**math**

you take a three-question multiple-choice test.each question has four choices.you dont know any of the answers. what is the experimental probability that you will guess exactly two out of three correctly please help me i am confused
*April 21, 2010 by Katherine*

**statistics **

A test has 1 true false question and 2 multiple choice questions(A B C D). Draw a tree diagram and determine the sample space for the possible ways to answer the test.
*May 5, 2013 by janae*

**statistics**

a quiz consists of 30 true or false questions. if the student guesses on each question, what is the standard deviation of the number of correct answers
*April 29, 2013 by mike*

**math**

Question: A student took a test composed of 20 question, with correct answers worth 2 points. If the student received 34 points for his grade, how many questions were correct? I KNOW THE ANSWER IS 17 BUT PLEASE PUT IN AN EQUATION FORM ex: (20x2)-34 = ???????
*October 26, 2010 by paully*

**Probability**

Please help.. Find the probability of getting 2 hearts if the cards are drawn from a regular deck and the first card is not replaced. A true/false quiz consists of twenty questions. If a student answers the twenty questions by making random guesses, what is the probability of ...
*December 10, 2006 by Mary*

**college**

A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering 3 OR 4 questions correctly.
*June 17, 2010 by poe*

**Math**

There is a test with 10 questions. Each question has a choice of three answers, but only one answer is correct. How many ways are there to fill out the test? By the way, we are learning combinations and permutations
*March 30, 2015 by Mike*

**stat**

A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering more than 4 questions correctly
*June 13, 2010 by laura*

**satistics**

A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering more than 4 questions correctly.
*October 20, 2010 by Anonymous*