Assume that random guesses are made for 7 ​multiple-choice questions on a test with 5 choices for each​ question, so that there are n=7 ​trials, each with probability of success​ (correct) given by p=0.20. Find the probability of no correct answers is ?

Q: The Pew Research Center reports that they are only able to contact 76% of randomly selected…

A: From the provided information, The Pew Research Center reports that they are only able to contact…

Q: Find the probability a randomly selected z-score is more than -1.31. Round your result to 4 decim.…

A: Probability that a randomly selected z score is more than -1.31  P(Z>-1.31)  The normal…

Q: Assume that random guesses are made for eight multiple choice questions on an sat exam so that there…

A: Indicated probability for the number of correct answers ( x denotes for correct answers) :

Q: Assume that guesses are made for 5 questions on a medical admissions test such that the probability…

A: Given: Probability of correct answer (p) = 0.40 Number of questions (n) = 5 Consider, X be the…

Q: Assume that random guesses are made for eight multiple-choice questions on an SAT test so that there…

A: The probability density for binomial distribution is: PX=x=Cxnpx1-pn-xwhere,n is total number of…

Q: Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there…

A: Solution: Let X be the random variable that the number of correct answer in the multiple choice…

Q: Assume that random guesses are made for nine multiple choice questions on an SAT​ test, so that…

A:

Q: Assume that random guesses are made for six multiple choice questions on an SAT​ test, so that there…

A: This will follow the Binomial distribution where n = 6, p = 0.3. The indicated probability for the…

Q: Assume that random guesses are made for 4 multiple-choice questions on a test with 5 choices for…

A: Introduction: Denote X as the number of correct answers on the test.

Q: Assume that random guesses are made for multiple choice questions on an SAT test, so that there are…

A:

Q: Assume that random guesses are made for 2 multiple-choice questions on a test with 5 choices for…

A: Introduction:If X ~ Bin (n, p), then the probability mass function of X is:p (x) = (nCx) px (1 – p)n…

Q: Find the probability distribution for the number of jazz CDs when 4 CDs are selected at random from…

A:

Q: Assume that random quesses are made for seven multiple choice questions on an SAT test, so that…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there…

A: GivenProbability of success or guessing correct p = 0.5total number of questions or number of trails…

Q: Assume that random guesses are made for 5 ​multiple-choice questions on a test with 5 choices for…

A: Given Information: number of questions, n = 5 Probability of sucess for each questions, p = 0.20 To…

Q: Assume that random guesses are made for eight multiple choice questions on an SAT​ test, so that…

A:

Q: Assume that when human resource managers are randomly selected, 36% say job applicants should follow…

A:

Q: Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes.…

A:

Q: Assume that random guesses are 7 mutiple-choice questions on a test with 5 choices for each…

A:

Q: Assume that random guesses are made for seven multiple choice questions on an SAT​ test, so that…

A: We have to find probability.

Q: Assume that guesses are made for 2 questions on a medical admissions test such that the probability…

A: Here, n = 2 and p = 0.80.

Q: Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there…

A:

Q: Assume that random guesses are made for twelve multiple choice questions on an SAT test, so that…

A: From the provided information, Number of trials (n) = 12 Probability of success (p) = 0.45 The…

Q: Assume that random guesses are made for seven multiple choice questions on a SAT test, so that there…

A: Let "X" be the number of correct answers

Q: Assume that when human resource managers are randomly selected, 41% say job applicants should follow…

A:

Q: Assume that random guesses are made for eight multiple choice questions on an SAT​ test, so that…

A:

Q: A poll reported that 63​% of adults were satisfied with the job the major airlines were doing.…

A: It is given that n = 20 and p = 0.63.

Q: Assume that random guesses are made for six multiple choice questions on an SAT​ test, so that there…

A: Givenn=6p=0.4x~Binomial(n=6,p=0.4)P(X=x)=(nx)×px×(1-p)n-x   ; x=0,1,...,n

Q: Assume that random guesses are made for seven multiple choice questions on an SAT​ test, so that…

A: It is given that X ~B(7,0.25).The PMF of binomial distribution is given by,

Q: A Discrete Mathematics Quiz has 10 multiple choice questions with four choices at which only one…

A:

Q: Suppose a jar contains 17 red marbles and 22 blue marbles. If 2 marbles are randomly chosen from the…

A: There are 17 red marbles and 22 blue marbles. Thus, there are 39 marbles in total.

Q: Assume that random guesses are made for 12 multiple choice questions on an SAT test, each with…

A:

Q: Assume that random guesses are made for 8 ​multiple-choice questions on a test with 2 choices for…

A: GivenTotal number of questions = n = 8Total number of options = 2P(correct answer) = 0.5 Let X be…

Q: Assume that random guesses are made for eleven multiple choice questions on a medical admissions​…

A:

Q: In a study on the dissemination of fake news, users of a social network were classified into two…

A: Solution: From the given information,

Q: Assume that random guesses are made for eight multiple choice questions on an SAT​ test, so that…

A: Let x follows binomial distribution with parameters n = 8 and p =0.4   The pdf of binomial…

Q: Assume that random guesses are made for seven multiple choice questions on a SAT test, so that there…

A: Given: n = 7 p = 0.35 x ~ Bin(7, 0.35) To calculate the indicated probability for the number of…

Q: Assume that random guesses are made for thirteen multiple choice questions on a medical admissions​…

A: Introduction:If X ~ Bin (n, p), then the probability mass function of X is:p (x) = (nCx) px (1 – p)n…

Q: assume that random guesses are made for multiple choice questions on an sat test, so that there are…

A:

Q: assume that random guesses are made for 8 multiple choice questions on an SAT test, so that there…

A: From the provided information, Number of trials (n) = 8 Probability of success (p) = 0.65

Q: Assume that random guesses are made for thirteen multiple choice questions on a medical admissions​…

A:

Q: Find the indicated probability.   A bin contains 64 light bulbs of which 10 are defective. If 5…

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

Q: In a population where 85 % of voters prefer Candidate A, an organization conducts a poll of 14…

A:

Q: Assume that random guesses are made for fifteen multiple choice questions on a medical admissions…

A: Assume that random guesses are made for fifteen multiple choice questions on a medical admissions…

Q: Assume that random guesses are made for ninemultiple choice questions on an SAT​ test, so that there…

A: Given datan = 9p= 0.4Applying Binomial theoremProbability of x success out of n trial is given by

Q: Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there…

A:

Q: There are 100 multiple-choice question on exam, each having responses a, b, c, d. suppose that a…

A: Given : n = 100 p = 0.75

Q: Assume that random guesses are made for nine multiple choice questions on an SAT test, so that there…

A: From the given information, the number of guesses is made for multiple choice questions on an SAT…

Q: Find the probability distribution for the number of jazz CDs when 4 CDs are selected at random from…

A: Solution : Given : Total number of CDs = 6 jazz +2 classical+3 rock= 11 Let, X : Number of jazz CDs…

Q: Assume 97% of smart phones work (so the probability that a chosen smart phone works is .97). if…

A: Probability that a chosen smart phone works is 0.97 Sample size, nT = 3

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.