In a second-grade class containing 13 girls and 9 boys, 2 students are selected at random to give out the maths papers. What is the probability that the second student chosen is a boy, given that the first one was a girl?

Q: A class is composed of 20 boys and 25 girls. If a pupil is called to recite, what is the…

A: Given  A class is composed of 20 boys and 25 girls. If a pupil is called to recite, what is the…

Q: At Riyadh 5% of all students play football and basketball, 32% of all students play football. What…

A: Let , A=all students play foot ballB=all students play basket ballgiven,P(A∩B)=0.05P(A)=0.32

Q: A department of commerce enrolls 125 students out of which 50 are girls. If 15 girls and 25 boys of…

A: It is given that, A department of commerce enrols 125 students out of which 50 are girls. It means…

Q: If a person randomly picks 4 of the 15 gold coins adealer has in stock, and 6 of the coins are…

A: Given , No of gold coins n=15No of random picks r=4P6 coins are counter feits=?

Q: In a large population, 59 % of the people have been vaccinated. If 3 people are randomly selected,…

A: Binomial distribution:It is a discrete probability distribution that has exactly two outcomes for…

Q: A homeowner plants 6 bulbs selected at random from a box containing 5 tulip bulbs  and 4 daffodil…

A: The probability is calculated by dividing the number of observation can involve in the sample…

Q: A new superman Mastercard has been issued to 2000 customers. Of these customers, 1500 hold a Visa…

A:

Q: In a family with 4 children, excluding multiple births, what is the probability of having 2 girls…

A: Probability is ratio of favourable chances to total chances. Total chances = S Favourable chances =…

Q: In a large population, 52 % of the people have been vaccinated. If 5 people are randomly selected,…

A: Let p be the proportion of vaccinated people. Given that p = 0.52 Let X denotes the number of…

Q: What is the probability that no two boys are sitting together for a photograph if there are 5 girls…

A:

Q: To make a 750 piece jigsaw puzzle more challenging, a puzzle company includes 5 extra pieces in the…

A: Probability of an event is defined as total favorable outcome divided by total possible outcome.…

Q: A homeowner plants 6 bulbs selected at random from a box containing 4 tulip bulbs and 4 daffodil…

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: In a class of 37 students, 17 are taking an AP test, 15 are taking an IB test and 6 are taking both.…

A:

Q: In a large town, previous records indicate that 40% of all high school graduates go to college. 30…

A: From the given information, n=30 and p=0.40.

Q: In a family with 3 children, excluding multiple births, what is the probability of having exactly 2…

A:

Q: In a math class of 30 students, 17 are boys and 13 are girls. On a unit test, 4 boys and 5 girls…

A: Given,no.of boys=17no.of girls=13total no.of students=30

Q: Suppose that 49% of people own dogs. If you pick two people at random, what is the probability that…

A: The probability that the people own dogs is 0.49.

Q: A biased coin, when tossed 7 times, has the same probability of obtaining 2 heads out of 7 as it…

A: Let us suppose that the probability of head = p Define the Random Variable, X : Number of heads in 7…

Q: What is the probability that Olivia receives exactly 3 texts from Robert after the fifth text, but…

A:

Q: What is the probability that he will roll a number greater than 2

A: Given:  A six pair to dice rolled from  S={1,2,3,4,5,6}  then to find probability that number…

Q: The probability that a house in an urban area will be burglarized is 6​%. If 47 houses are randomly​…

A:

Q: In a second grade class containing 14 girls and 11 boys, 2 students are selected at random to give…

A:

Q: In a family of 3 children, what is the probability that the middle child is a girl?

A: If a family have 3 children, then the possible outcomes…

Q: In a group of 10 people chosen randomly, what is the probability that three of the ten people have a…

A: Given: Number of trials (n) = 10 Probability of success (p) = 11000000=0.000001 Let X be the number…

Q: A grocery store manager notes that 35% of the customers who buy a product make use of a store coupon…

A: Given: Probability of customers who buy a product is, p=35%=0.35. Number of people purchase the…

Q: According to American Airlines, its flight 215 from Orlando to Los Angeles is on time 90% of the…

A: It is given that the 90% of the flights from Orlando to Los Angeles are arrived on time. The 15…

Q: a marble is selected at random from a jar containing 6 red marbles, 5 yellow marbles, and 4 green…

A: Given,  containing 6 red marbles, 5 yellow marbles, and 4 green marbles Probability= no. Of…

Q: A painting is selected at random from the three Manila painters, what is the probability that it won…

A:

Q: A box has 18 blue hats and 30 red hats. If you pick 2 hats without replacement, what is the…

A:

Q: ) A human resources director for a large corporation claims that of the 97 employees on a typical…

A: P: probability that an employee is on time P= 90/97 = 0.9278 a) P(both arrive on time) = (0.9278)2 =…

Q: In a large population, 40 % of the people have been vaccinated. If 4 people are randomly selected,…

A:

Q: In a large population, 70 % of the people have been vaccinated. If 5 people are randomly selected,…

A: Solution: Let X be the number of people has been vaccinated and n be the sample number of people…

Q: A school survey found that 9 out of 10 students like pizza. If three students are chosen at random…

A: We have to find given probability..

Q: In a high school graduating class of 100 students, 54 studied mathematics, 69 studied history, and…

A:

Q: if two students are randomly chosen from a group of 3 boys and 3 girls, what is the probability that…

A:

Q: In a box, there are 8 orange, 7 white, and 6 blue balls. If a ball is picked up randomly, what is…

A: Given info: In the box, there are 8 orange, 7 white, and 6 blue balls.

Q: In a family with 4 children, excluding multiple births, what is the probability of having exactly 2…

A: Given data, n=4 Let probability of getting a girl=0.5 Let X be event of having a girl P(X=2)=?

Q: What is the probability that at least one of the next four cars that enter the lot is a sedan?

A: Ramon is a parking lot attendant. He estimates that 30% of the cars in the lot are sedans, 10% are…

Q: You are in a 12-member panel. If two people from the panel are selected to represent the panel, what…

A:

Q: In a recent survey, 70% of the community favored building a health center in their neighborhood. If…

A: Let "X" be the community favored by building a health center in their neighborhood.

Q: Suppose that 73% of students in a college have a smart phone. If you select three students at…

A: Let success denotes one selected student have a smart phone. Then p=probability of success= 0.73…

Q: In a security check, it is known that out of 100 people, 2 persons bring things that are not allowed…

A: Probability distribution

Q: The probability that an individual is left-handed is 12%. In a randomly selected class of 30…

A: The following information has been given: The probability that an individual is left-handed is 12%.…

Q: A class consists of 66 women and 67 men. If a student is randomly selected, what is the probability…

A: The class has a total of 66+67=133 students.And the class has 66 women.

Q: .A class consists of 17 women and 65 men. If a student is randomly selected, what is the probability…

A: It is given that Number of women = 17 Total = 17 + 65 = 82

Q: In a small private​ school, 3 students are randomly selected from 18 available students. What is the…

A: Given information 3 Students are selected from 18 students

Q: In a high school graduating class of 100 students, 54 studied mathematics, 69 studied history, and…

A: Define the events as follows: M : The student takes Mathematics H : The student takes History

Q: If a fiancial services committee had 60 members, of which 10 were women, if 8 members are selected…

A: From the given information,   Total members = 60 Number of women = 10 Number of men = 60 -10 = 50

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.