A student takes an exam containing 20 true or false questions. if the student guesses, what is the probability that he will get exactly 5 questions right ? Round your answer to four decimal places.

Q: probability of getting a prize on or before the 3rd herb you picked?

A: here given , Suppose that you were playing an online game in which the game developers decided to…

Q: A typist makes 3 errors per page on the average. What is the probability that she makes (i) no error…

A:

Q: In a large population, 59% of the people have been vaccinated. If 5 people are randomly selected,…

A:

Q: A film distribution manager calculates that 8% of the films released are flops.   If the manager is…

A: Given that : A film distribution manager calculates that 8% of the films released are flops Let p be…

Q: According to the New York State Board of Law Examiners, approximately 64% of people taking the New…

A: Given P=0.64

Q: A history class is comprised of 3 female and 9 male students. If the instructor of the class…

A: Given:- female students =3 male students =9 total students = 3+9 = 12   5 students are randomly…

Q: If two cards are drawn without replacement, what is the probability that the first card is a black…

A: There are 52 card in the deck in which they divided into two color i.e red(26) and black (26). These…

Q: An urn contains 3 yellow balls and 6 white ball . If Vince chooses 7 balls at random from the urn ,…

A: The number of yellow balls is 3 and the number of white balls is 6.

Q: A history class is comprised of 8 female and 6 male students. If the instructor of the class…

A:

Q: If two dice are thrown, what is he probability that the number on the first die is less than the…

A:

Q: If the probability that a vaccine you took will protect you from getting the flu is 0.86, what is…

A: The sum of probabilities of different cases of a scenario is always 1. Here after taking the…

Q: An urn contains 5 red balls and 9 yellow balls. If Vince chooses 6 balls at random from the urn,…

A: It is given that Number of red balls = 5 Number of yellow balls = 9 Total = 14 Sample size = 6 The…

Q: select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card…

A: A card is randomly selected from well-shuffled standard deck of 52 cards. There are 13 cards of club…

Q: A couple decides they will continue to have children until they have two males. What is the…

A:

Q: A researcher believes that 4%4% of females smoke cigarettes. If the researcher is correct, what is…

A: Where,

Q: A football player scores 2 goals out of every 3 penalty kicks. If we ask him to take 4 penalty…

A:

Q: A statistics student sets TWO alarm clock to be sure to wake up on test day. If each clock has a 95%…

A:

Q: Suppose we randomly draw one card from a standard 52-card deck. What is the probability that we draw…

A: We have given that  There are 52 card in the deck in which they divided into two color i.e red(26)…

Q: During a game of Blackjack, four players are dealt two cards each, and the dealer has two cards. No…

A:

Q: The probability that a selected individual has a Visa card is 0.50. The probability that a selected…

A:

Q: According to the british Ministry of Health, the probability of a woman developing breast cancer…

A: Given: Number of women (trials) = 10 Probability of breast cancer (p) = 310= 0.3 X be the binomial…

Q: According to an article, 10.5% of Internet stocks that entered the market in 1999 ended up trading…

A:

Q: If a person is chosen at random, what is the probability that he or she does not smoke? (round your…

A:

Q: A manufacturing machine has a 4% defect rate. If 8 items are chosen at random, what is the…

A: Given,n=8p=0.04Let X=no.of defective itemsX~Binomial(n=8 , p=0.04)P(X=x)=8x0.04x1-0.048-x  ;…

Q: A pharmaceutical company states that the average number of people that have serious medical issues…

A: Let , X be the number of people that have serious medical issues. X  follows Poisson distribution…

Q: An urn contains s yellow balls and 6 white balls. If Tim chooses 7 balls at random from the urn,…

A: Total number of balls in the urn is 5+6=11 Since 7 balls can be drawn out of  11C7  ways The…

Q: A researcher believes that 7% of pet dogs in Europe are Labradors. If the researcher is right, what…

A: Given, p=0.07 1-p = 1-0.07 =0.93 n=538

Q: According to the New York State Board of Law Examiners, approximately 64% of people taking the New…

A: We have given that  Population proportion p=64%=0.64 1) sample size n=14  2) sample size n=42

Q: A film distribution manager calculates that 7% of the films released are flops. If the manager is…

A: It is given that n =653 and p =0.07.

Q: You determine that your friend who doesn’t own a car has a 90% chance of calling today because it is…

A: Given data: You determine that your friend who doesn’t own a car has a 90% chance of calling today…

Q: A history class is comprised of 3 female and 4 male students. If the instructor of the class…

A: Given,   Number of female = 3 Number of male = 4   Total = 7   The objective is to find the…

Q: During a single day at radio station WMZH, the probability that a particular song is played is 22%.…

A:

Q: A pharmaceutical company states that the average number of people that have serious medical issues…

A: Solution: a. Let X be the number of people that have serious medical issues with their medicine.…

Q: According to the New York State Board of Law Examiners, approximately 68% of people taking the New…

A: Given,population proportion(p)=0.68

Q: Matt does not know the correct answer to a test question. The answer choices are A. B. C. or D. If…

A:

Q: In an MCQ based exam, students get 3 questions correct on average. a. What is the probability that…

A: Given Information: In an MCQ based exam, students get 3 questions correct on average. Let X denote…

Q: The Gallup organization found that 27% of Americans own a cat as a pet. Find the probability 4…

A: Probability: The ratio of the number of favorable outcomes to certain event and total number of…

Q: An urn contains 10 white ball and 7 green balls. If Sam chooses 11 balls at random from the urn ,…

A:

Q: Another bag of marbles contains 6 blue marbles and 1 green marble. Mary and Frank will draw a blue…

A: Probability: Probability is a chance factor that occurs at every outcome of a random experiment.…

Q: An urn contains 5 red balls, 3 green balls. Draw 8 balls without replacement. What is the…

A: We can draw the third ball to be red in 5C1=5 ways. We can draw the seventh a green one in 3C1=3…

Q: If a person takes a five questions true-false, what is the probability of the event that the score…

A: For the given statement

Q: A pair of dice is thrown, If it is known that one die shows a 4, what is the probability that:…

A:

Q: A telephone exchange operator assumes that 5% of the phone calls are wrong numbers. If the operator…

A: Givenproportion p=0.05sample size n=460mean m=p=0.05standard deviation σ=p(1-p)n…

Q: For extra credit, George has one chance to correctly guess his instructor's birthday (not including…

A: there are 365 days In a year (without leap year).

Q: A 6-sided die with sides numbered 1 through 6 is tossed. A penny is then tossed. If the penny comes…

A: if penny comes up heads, outcomes are doubled, if not comes up head, it is left unchanged.

Q: The average number of homes sold by the Acme Realty Company is 2 homes per day. What is the…

A: As per bartleby guidelines, only 1 question is answered, please upload the rest separately. The…

Q: A scientist claims that 4%4% of viruses are airborne. If the scientist is accurate, what is the…

A: A scientist claims that 4% of viruses are airborne. That is, p=0.04. Let p^ is defined as the sample…

Q: A box contains 15 green marbles and 16 white marbles. If the first marble chosen was a white marble,…

A: Solution: From the given information, a box contains 15 green marbles and 16 white marbles. Total…

Q: If you toss a coin 6 times, what is the probability of getting exactly 3 Heads?  (Round to 3 decimal…

A: When a coin is tossed the probability of getting heads is 0.5 p=0.5 Number of times coin is tossed…

Q: You are pulling from a bag containing 2 blue marbles, 3 black marbles, 2 green marbles, and 1 yellow…

A: Total number of marbles=2+3+2+1=8 Number of blue marbles=2 Required probability =(Number of possible…

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.