If you make random guesses for 10 multiple-choice MCAT test questions (each with five possible answers), what is the probability of getting at least 1 correct?  If these questions are part of a practice test and an instructor says that you must get at least one correct answer before continuing, is there a good chance you will continue?

Q: A group of students consisting of 20 males and 20 females were selected to participate in a research…

A: The number of female students is 20. Thus, the total number of students is 20+20 = 40.

Q: 1. Suppose that 31% of adults have at least one tattoo. If you sample 90 rand adults, what is the…

A: Z = p^-pp(1-p)n~N(0,1)

Q: In horseracing, an “Exacta” bet is won by correctly predicting the horses that finish first and…

A: Number of horses in the recent horserace = 20 Number of ways to select first and second place = 2!=2

Q: If the firm stated that 30% would buy if contacted at home. What is the probability of the sales…

A:

Q: GreenFacts, a non-profit organization,reports that the average adult in Europe consumed 17 litres of…

A:

Q: 1. Suppose that 31% of adults have at least one tattoo. If you sample 90 random adults, what is the…

A: From the given information the probability that adult have tattoos is .31. Samples are taken random…

Q: What is the probability of randomly selecting a 3-children family with two girls?

A: We will first list all possible outcomes in the sample space, then we will use following definition…

Q: In a multiple choice test, each question is to be answered by selecting 1 out 5 choices, of which…

A: Formula : Binomial distribution is given by

Q: In a Gallop Poll, 35% of 30 - 49 states that they believe in ghosts. Find the probability that out…

A: (a) The probability that college students do not believe in ghosts is, P(do not believe in ghosts)…

Q: A student takes a 20 question, multiple choice exam with five choices for each question and guesses…

A:

Q: If a single fair die is rolled, find the probabilities of the follow- ing results A 4, given that…

A: When a single dice rolled: Possibilities outcomes are: 1, 2, 3, 4, 5, 6.

Q: A university task force of 8 people is to be formed from 16 members of the student government and 10…

A: From the provided information, Number of students = 16 Number of professors = 10 Total members = 16…

Q: In a multiple-choice test, each question is to be answered by selecting 1 out of 3 choices of which…

A:

Q: In a test of four questions with five choices each, if all questions are randomly marked, what is…

A:

Q: A test has three parts. Part A consists of nine true-false questions, part B consists of four…

A: Given: Part A consists of 9 true-false questions. Part B consists of 4 multiple-choice questions…

Q: If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 900 are…

A: Solution:Binomial distribution approximated to normal distribution or not is checked below:It is…

Q: A university planner wants to determine the proportion of spring semester students who will attend…

A: The following information has been given: The sample size is n=50. The favorable cases X=12

Q: If you make random guesses for 10 multiple choice questions each with 5 possible answers, what is…

A: Solution: Let X be the number of correct answers and n be the sample number of questions.

Q: there were 5 million births in a particular country and 3375 sets of naturally occurring triplets,…

A:

Q: A test consists of ten multiple choice questions each with five possible answers, of which only one…

A: Total number of questions=10 number of possible answers=5 Probability of guessing correct answer for…

Q: A quiz has 10 multiple-choice questions. Each has 4-options, so a 25% chance of guessing correctly.…

A: According to the provide information, A quiz has 10 multiple-choice questions. Each has 4-options,…

Q: If you make random guesses for 5 multiple choice SAT questions (each with 5 possible answers), what…

A: Given data: 5 multiple choice SAT questions.

Q: If 9 out of 1501 people have a certain genetic defect, what is the probability of selecting three…

A:

Q: One hundred people were asked, "Do you prefer remote classes?". Of the 63 that answered "yes" to the…

A: It is an important part in statistics . It forms the basics of probability .   Male Female Total…

Q: An average student is known to have a chance of 50% in answering a TRUE or FALSE question correctly.…

A: Obtain the probability that an average student will have at least 1 correct answer.   The…

Q: What is the likelihood of getting a total of 8 or 11 twice, matching pair 5 times, and any other…

A: Please check the solution below

Q: A test consists of 10 multiple choice questions, each with five possible answers, one of which is…

A: Obtain the probability that that the student will get at most 8 answers correctly. The probability…

Q: if you make random guesses for 10 multiple choice test questions (each with 5 possible answers, what…

A: Given that, It is given that there are 10 multiple choice questions, a student makes a random guess…

Q: If a pair of dice is tossed 6 times, what is the probability of obtaining of 7 or 11 twice, a…

A: Here, a pair of dice is tossed 6 times. The total number of possible outcomes is 36. The total of 7…

Q: A test has three parts. Part A consists of three true-false questions, part B consists of three…

A:

Q: An experiment consists in asking 8 people whether they have a college degree, and counting the…

A: Let 0 represents that the individual, answer that they do not have the degree, while 1 represents…

Q: An experiment is to draw 1 card from a fair deck of playing cards.  Find the probability of getting…

A: probability of an event =number of outcomes of an event/ number of outcomes of sample space.

Q: If I have 8 cars and 11 trucks to select from to be tested for a safety inspection, what is the…

A: We have, n1= 8 = the number of cars n2 = 11 = the number of trucks N= 19 = total number of vehicles…

Q: It is stated by the IRS that 71% of filed returns receive a refund.  If you were to sample 50…

A: According to the given question, it is stated by the IRS that 71% of filed returns receive a refund.…

Q: According to a recent study, 24% of the USA population is Catholic. The survey also shows that 71%…

A: Percentage of population is Catholic is 24%. Percentage of Catholic are Democrats is 71%. Percentage…

Q: If A and B are events in the same sample space, then how will you get the probability of A or B…

A: If A and B are events in the same sample space, the probability of A or B occurring is…

Q: Just before a referendum on a school​ budget, a local newspaper polls 424 voters to predict whether…

A: It is given that ,just before a referendum on a school​ budget, a local newspaper polls 424 voters…

Q: According to data on the sale of Vehicles in Barbados, it was calculated that men purchase 75% of…

A: From the provided information, Men purchase 75% of vehicles in Babados (p) = 0.75 Sample size (n) =…

Q: If an unprepared student guess for 10 true-false questions, what is the probability they will get…

A:

Q: If you randomly select a letter from the phrase "Terrace Park Wolves rule," what is the probability…

A: Here total outcomes (words) are n=21 Here total vowels are 8

Q: In a survey of US adults with a sample size of 2000, there are 1229 people who said Ronald Reagan…

A: We can select the first adult who said Ronald Reagan was the best president in 1229 ways.  We can…

Q: A colony of laboratory rats contain 16 white rats and 9 spotted rats.What is the probability of…

A: Introduction:Probability of an event is the number of outcomes favorable to the event, divided by…

Q: If the population proportion is 0.90 and a sample of size 64 is taken, what is the probability that…

A:

Q: If a student is guessing randomly on a multiple choice test with 4 possible responses per question,…

A: Given: X=Guessing correct answer of multiple choice question Number of questions n=16 Number of…

Q: A letter is taken at random out of "ASSISTANT" and out of "STATISTICS". What is the chance that they…

A:

Q: If you make random guesses for 20 multiple choice test questions each with four possible answers,…

A: The random variable X is defined as the numbers of correct answers. There are four answer choices…

Q: Mr. Keller filled out a bracket for the NCAA National Tournament. Based on his knowledge of college…

A: It is given that the player guessing any one game correctly is 0.64. There are 32 games in the first…

Q: In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use…

A: This question can be solved using hypothesis test for a Proportion. Among the respondents, 208…

Q: In an 8 question multiple-choice test, each question has 5 choices and only one of those choices is…

A:

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.