An exam has 16 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 16 questions. what is the expected number of correct guesses is?

Q: On a 6 question multiple-choice test, where each question has 5 answers, what would be the…

A: From the provided information, Number of questions (n) = 6 Each question has 5 answers.

Q: At The Fencing Center, 60% of the fencers use the foil as their main weapon. We randomly survey 28…

A: Given n=28 P=1-0.6=0.4

Q: w many outcomes are there in the sample space? no ma

A: Sample space in statistics is defined as the set of all possible outcomes in any random experiment.…

Q: A multiple -choice test consists of 6 questions . Each question has answers choices of a,b,c,d, and…

A: From the provided information, Number of questions (n) = 6 Each question has answers choices of…

Q: There is a 10 question multiple choice test, with 4 choices per question.  You decide to randomly…

A: Solution

Q: A students takes a 5 – question, multiple-choice exam with four choices for each question and…

A: It is given that a students takes a 5 multiple choice question with each four choices.

Q: On a 9 question multiple-choice test, where each question has 4 answers, what would be the…

A: Obtain the probability of getting at least one question wrong.   The probability of getting at…

Q: You forget to study for the multiple choice exam in your next class. Suppose the test has 5…

A: It is an important part of statistics. It is widely used.

Q: Suppose you have 10 tennis balls and you randomly pick some number of them. What is the probability…

A: Given the event that there are 10 tennis balls and one randomly pick some number of them.

Q: Pablo randomly picks three marbles from a bag of nine marbles (four red ones, green ones , and two…

A: There are total 9 marbles. And he will pick 3 marbles from it.  He can do that in 9C3= 84 ways So 84…

Q: The probability of a student to be successful in the "Critical Thinking and Decision Making" course…

A:

Q: Assume that you guess on each question of a multiple choice test. There are 12 questions and each…

A: Given Data: The number of questions is: n=12 The possible answers to each question are: r=4 The…

Q: Pablo randomly picks three marbles from a bag of eight marbles (four red ones, three green ones, and…

A: note: C(a,b)=a!b!(a-b)!     (a>b). we will be using combination as Pablo chooses 3 marbles out of…

Q: Pablo randomly picks four marbles from a bag of nine marbles (five red ones, three green ones, and…

A: Given,no.of red marbles =5no.of green marbles=3no.of yellow marbles=1total n.of marbles =9

Q: On a 10 question multiple-choice test, where each question has 3 answers, what would be the…

A: Given : Number of sample = n = 10 Probability of right question = p = 1/3 = 0.3 Probability of wrong…

Q: A test contains 7 multiple-choice questions. Each question has one correct answer to choose from 4…

A:

Q: Jack wrote a 10-question multiple choice quiz. Each question has five possible choices. What is the…

A:

Q: The questions on a test consist of 15 multiple choices, 11 essays, and 5 free responses. If the…

A: The questions on a test consist of: 15 multiple choices 11 essays 5 free responses Total number of…

Q: A final exam has 40 multiple choice questions. Each question has 5 possible answers, one of which is…

A: N = 40.Probability of correct answer: Probability of incorrect answer: A correct answer is worth 4…

Q: on a multiple choice test with 20 questions, each question has 4 possible answers, one of which is…

A: We have to find mean  for students who guess at all  correct answers..

Q: You have a homework assignment that contains 12 questions. Your instructor will grade a set of 5…

A: Given: Total number of questions, n = 12            5 questions would be graded Part 1: The total…

Q: Suppose you are randomly guessing in a ten multiple choice questions. Find the probability that you…

A: To solve this problem, binomial probability distribution is applicable. The binomial probability of…

Q: Describe the sample space that you would use to calculate the probability of the months in a year.

A:

Q: On a 9 question multiple-choice test, where each question has 3 answers, what would be the…

A:

Q: A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is…

A:

Q: If you have to answer 14 multiple choice questions, with each question having 7 choices, what is the…

A: The objective of this question is to find the probability of getting 6 or more correct answers out…

Q: ultiple choice test consists of 60 questions. Each question has 4 possible answers of which one is…

A: Given: n = 60 The probability of correct answer is, p=xn=14=0.25 The mean can be calculated as: μ =…

Q: A student ran out of time on a multiple choice exam and randomly guessed the answers for two…

A: The objective of this question is to find the probability that the student answered both of the…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.