A student takes a 10 question true false test he has not attended class nor study the material and so he guesses on every question find the probability distribution of the random variable representing the number of questions he got correct what is the probability he gets At least 8 questions correct

Q: In a particular year 40% of home sales were partially financed by the seller. A random sample of 250…

A: The random variable p follows binomial distribution. The population proportion value is 0.40. The…

Q: A shipment of twenty radios contains six defective radios. Two radios are randomly selected from the…

A: Given : probability of defective ,p = 6/20 = 0.3 total number of trail , n = 2

Q: a box consist of 2 different colors of clip papers (red or green) of you will get 4 clip papers at…

A: The binomial probability distribution is, PX=x=nxpx1-pn-x In the formula, n denotes the number of…

Q: eter is playing a game with two friends. The game is designed to be a game of        chance so that…

A: The probability of Peter winning each game is 1/3.

Q: At an airport 78% of recent flights have arrived on time. A sample of 14 flights is studied.  find…

A: Given, Probability flights arrive on time = p = 0.78 Probability flights donot arrive on time = q =…

Q: 1. An engineer suspects mercury contamination in an area which contains 3 lakes and 2 streams. He…

A: The number of lakes is 3. The number of streams is 2.

Q: What is mean and variance of the probability distribution?

A:

Q: The probability that a person in the United States has Type B+ blood is 8%. Four unrelated people in…

A: Solution: We are given that the probability that a person in the United States has Type B+ blood =…

Q: High temperature in a certain city for the month of August follow a uniform distribution over the…

A: Given information X ~ Uniform (α = 63, β = 90)

Q: Market research has shown that 60% of persons who are introduced to a certain product actually buy…

A: Given  Market research has shown that 60% of persons  certainly buy the product probability of…

Q: One face of a coin is painted green and the other face is painted blue. The coin is biased so that…

A:

Q: A coach has 6 players that will join track and field. The random variable that is being studied is X…

A:

Q: A box contains 20 books. The probability a book defective is 0.09. What is the probability that i)…

A: Let us denote X= the number of defective booksn=sample size=20p=probability of getting a defective…

Q: small inn has 4 rooms.  Let X represent the number of rooms that are rented out on any given…

A: Given that  The probability distribution of number of rooms rented out on any given Saturday . X= It…

Q: Students come randomly and independently at the cashier’s window at the rate of 30 students per hour…

A:

Q: A school newspaper reporter decides to randomly survey 12 students to see if they will attend Tet…

A: Solution: From the given information, probability that the students attend Tet festivities is 0.18…

Q: Suppose a fair coin is tossed 3 times. Find the probability distribution for the number of tails…

A: Given : Experiment :  A fair coin is tossed 3 times Possible outcomes : Ω = { HHH , HHT , HTH , THH…

Q: The accompanying table describes the random variable x, the numbers of adults in groups of five who…

A: From the given information, X P(X) 0 0.172 1 0.37 2 0.292 3 0.136 4 0.026 5 0.004…

Q: a coach has 6 players that will join track and field. the random variable that is being studied is…

A: 2. Given: Number of players join a coach for track and field is 6 Majority means more than 4 players…

Q: A class has two exams. You know that 80% of the students passed the first exam and that 40% of the…

A: Let A= event that a student passed in the first exam  B= event that a student passed in the second…

Q: During the 2013 regular NBA season, DeAndre Jordan of the Los Angeles Clippers had the highest field…

A: In the given problem we have given that, During the 2013 regular NBA season, DeAndre Jordan of the…

Q: box contains the 4 numbers:   1  2  4  5.     We will make 2 draws from this box, one at a time,…

A: we have to find given probability.

Q: A box contains the 4 numbers:   1  2  4  5.     We will make 2 draws from this box, one at a time,…

A: Probability quantifies the chances of happening an event. The probability values always lie in the…

Q: In the game of roulette a metal ball is dropped into a spinning wheel having 38compartments, 18 of…

A: Given X is the random variable that denotes number of times

Q: Market research has shown that 60% of persons who are introduced to a certain product actually buy…

A: i. The variable of interest in this scenario is "sell of a product introduced in the market".

Q: A census was conducted at a school. All of the students were asked how many cars their family owns.…

A: we have given that  number of cars =   0  , 1  ,  2   , 3   ,  4 probability       = 0.005 , 0.120 ,…

Q: Find the probability that exactly five green hats are drawn.

A: A bag contains three red hats, two green hats and one orange hat Eight hats will be drawn at random…

Q: A bag contains 8 red, 5 yellow and 6 blue jelly beans. 3 jelly beans are selected from the bag. a)…

A: As per guidelines we will only answer first three subparts, please repost other subparts for more…

Q: box contains the 4 numbers:   1  2  4  5.     We will make 2 draws from this box, one at a time,…

A: Value of X ? 2 2,5 4 5 Probability 1/6 ?? 1/6 1/6 1/6 Dear Student, As per the guidelines,I can…

Q: An unfair coin is flipped. If a head turns​ up, you win​ $1. If a tail turns​ up, you lose​ $1. The…

A: From the provided information, An unfair coin is flipped. If head turns up you will $1 and lose $1…

Q: A family has three children. let x be the random variable for the number of boys. construct a…

A: Let the random variable X denote the number of boys Let B denote the boy and G denote the girl.…

Q: A warehouse employs 28 workers on first shift, 15 workers on second shift, and 12 workers on third…

A:

Q: A biased coin is tossed three times. At each toss, the probability of getting a head is two times…

A: A random Variable X is a function from sample space to real numbers.

Q: Sixty percent of US mothers with school-age children choose fast food as a dining option for their…

A:

Q: I don't understand how to solve this.

A: Solution: We are given that a warehouse employs 26 workers on first shift, 15 workers on second…

Q: In a high school, the probability that a student owns a bicycle is 0-45 A random sample of 10…

A: Note: Hi! Thank you for the question. As you have posted multiple questions, according to our…

Q: very business day, Michael's alarm goes off at 06:30. The probability he hits the snooze button is…

A: It is given that each business day, Michael's alarm goes off at 06:30. Therefore, the probability…

Q: A jar contains 16 coins: 8 pennies, 5 nickels and 3 dimes. A child selects 2 coins at random without…

A: From the given information, there are 16 coins. Those are, 8 pennies, 5 nickels and 3 dimes.   One…

Q: TATTOOS MAY LOOK UGLY IN OLD AGE) Among 250 employees of a Tatto0 Company, a total of 130 have…

A: Given Information: Total number of employees = 250 Out of which 130 have tattoos Number of males =…

Q: The probability that an adult possesses a credit card is .65. A researcher selects three adults at…

A:

Q: icky randomly barks only 40% of the time as strangers pass by the house. Loomi randomly barks 30% of…

A: In probability theory and statistics, the Bernoulli distribution, named after the Swiss…

Q: A box contains three coins: one is fair, one is two headed and onè coin is weighted so that the…

A: Answer: For the given data, we have,

Q: Market research has shown that 60% of persons who are introduced to a certain product actually buy…

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

Q: To avoid unpleasant surprises when the statement comes, you try to record all your credit card…

A: Let X be the number of purchases unrecorded. n=25 p=Proportion purchases unrecorded=0.05…

Q: A family has three children. Let X represents the number of boys. Construct a probability…

A: Solution: Let X be the number of boys and n be the number of children. Probability of child is a boy…

Q: At a Raffle, 1000 tickets are sold at $5 each. There are 20 prizes of $100, and 1 grand prize of…

A: The number of tickets is 1000 and is sold at $5 each.The number of grand prizes is only one with…

Q: A box contains the 4 numbers:   1  2  4  5.     We will make 2 draws from this box, one at a time,…

A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…

Q: A student takes a 10 question true or false test he has not attended class nor study the material…

A: Given,n=10P=probability of getting a correct answerP=12 Let , X=the number of questions he got…

Q: An assembly line produces a tool. The parts are independently sampled one at a time and tested for…

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

Q: An unfair coin is flipped. If a head turns​ up, you win​ $1. If a tail turns​ up, you lose​ $1. The…

A: Given Information : An unfair coin is flipped. If a head turns​ up, you win​ $1. If a tail turns​…

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.