A psychology class consists of 32 freshmen and 48 sophomores. If the professor selects names from the class list using random sampling. What is the probability that the first student selected will be a freshman? p =     If a random sample of n = 6 students is selected and the first five selected are sophomores, what is the probability that the sixth student selected will be a freshman? p =     What is the probability that the first student selected will be a freshman after 10 sophomores students join the class? p =

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: a warehouse employs 26 workers on first shift, 15 workers on second shift, and 12 workers on third…

A: Given: Number of first shift workers = 26 Number of second shift workers = 15 Number of third shift…

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

A: The number of male students is 20 The number of female students is 20. The total number of students…

Q: In a certain community, it is accepted that 85% of households are two-income households. You select…

A: Given, n=150 p=85%=0.85 q=1-p=0.15

Q: A psychology class consists of 28 males and 52 females.  If the professor selects names from the…

A:

Q: In a recent year, 13% of businesses have eliminated jobs. If 6 businesses are randomly sampled, what…

A: Let us denote X=the number of businesses that have eliminated jobs. n=sample size=6 p=probability of…

Q: A college sends a survey to selected members of the class of 2019. Of the  1,913   people who…

A: Given information No of people graduated = 1913 No of women = 569 No of women who went to graduate =…

Q: A statistician wants to study the number of credit cards a person has. He took a sample and found…

A: Given: X = number of credit cards a person has  X is a random variable which can take values 0, 1 ,…

Q: Among the adults in a large city, 30% have a college degree. A simple random sample of 100 adults is…

A:

Q: With one method of a procedure called acceptance sampling, a sample of items is randomly selected…

A: With one method of a procedure called acceptance sampling, a sample of items is randomly selected…

Q: With one method of a procedure called acceptance sampling, a sample of items is randomly selected…

A: According to the provided information, the ABC Electronics Company has just manufactured 1650…

Q: A psychology class consists of 28 males and 32 females. If the professor selects names from the…

A: a). Total number of students: 28+32=60 Probability that the first student selected will be a female:…

Q: A small voting district has 90 female voters and 80 male voters. A random sample of 10 voters is…

A: Given, No. of Female voters = 90 No. of male voters = 80 Total voters = 90+80 = 170 Random sample of…

Q: According to a study, 20% of corporate officers are women. Suppose that you select a random sample…

A:

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 group of 10 students are used for an experimental study. The group comprises of 3 students with…

A: Group of 10 students,  Type O = 3 Type A = 4 Type B = 3 A random sample of 5 is drawn. The…

Q: A student organization committee consisting of 7 people to be formed by selecting from a group of 26…

A: We have to find given probability.

Q: A psychology class consist of 28 males and 52 females. If the professor selects names from the…

A: It is given that a psychology class consist of 28 males and 52 females. Thus,  Total number of…

Q: Past experience shows that conditional on being offered admission at a particular university, 70% of…

A:

Q: A committee of 8 members is to be formed from a group of 8 men and 8 women. If the choice of…

A: Number of men=8 Number of women=8 The objective is to form a group of 8 members with half of these…

Q: The national weather service states that 40% of hurricanes that make landfall on the east coast of…

A: Obtain the probability that in a sample of 15 hurricanes that make landfall on the east coast of the…

Q: A box contains 5 green balls and 4 red balls. The probability of selecting 2 green balls and 1 red…

A: Given: box contains 5 green and 4 red balls  3 balls are drawn without replacement then the…

Q: For a departmental inquiry committee, an employer randomly selects a sample of three employees from…

A: The following information is available in the question Total number of employees = 10 Number of…

Q: A statistics class has 24 students where students work in groups of 4 every week that are randomly…

A: a.   The probability that a student will work in the same group of 4 this week that they did last…

Q: In an examination 30% students have failed in mathematics, 20% of the študents have failed in…

A:

Q: A poll is given, showing 35% are in favor of a new building project. If 8 people are chosen at…

A:

Q: A new surgery is successful 80% of the time. If the results of 6 surgeries are randomly sampled,…

A:

Q: The distribution of blood types for a certain population is 35% type A , 10% type B, 50% type O and…

A:

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: In a survey of U.S. adults with a sample size of 2044, 400 said Franklin Roosevelt was the best…

A:

Q: A semi-truck for a recreational cycling group carries   11   mountain bikes and   13  ten-speed…

A: Solution

Q: It has been estimated that 21% of Americans are smokers. If three American adults are chosen at…

A: From the given information. The probability of American are smoker 0.21.

Q: A class consists of 28 males and 52 females . If the professor selects names from the class list…

A: Given information- We have given that a class consists of 28 males and 52 females. Total students =…

Q: Approximately 11% of students at BCC are Criminal Justice majors. If you take a simple random sample…

A: Let X= number of students who are Criminal Justice majors the probability of a student being…

Q: If the firm stated that 40% would buy if contacted at home. What is the probability of the sales…

A: Given Information:  40% would buy if contacted at home i.e., p=0.40 Sample size (n) = 30 To find the…

Q: A class consists of 10 male and 30 female students. A random sample of n = 3 students is selected…

A: From the provided information, Total male students = 10 Total female students = 30 Total students in…

Q: If a classroom of 32 students has 7 males (5 of who are single and 2 who are married) and 25 females…

A: Given,no.of single males=5no.of married males=2no.of single females=7no.of married females=18total…

Q: A psychology class consists of48 males and 62 females. If the professor selects names from the class…

A:

Q: A recent survey found that 40% of all air traffic controllers found their job extremely stressful.…

A: A random variable x will follow the binomial distribution if the following conditions are satisfied.…

Q: 33 live births per 1,000 per year result in twins, what is the probability of getting more than…

A: The true percentage of live births that result in twins will be: p  =331000×100    =3.3%

Q: A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan…

A: Given Data: Let X be the random variable  n=41 p=0.04 X~ Binomial (41, 0.04)

Q: A three-person jury is to be selected, at random, from a pool that has 6 people with green eyes and…

A: A pool that has 6 people with green eyes and 6 people with blue eyes. A 3-person jury is to be…

Q: A poll is given, showing 30% are in favor of a new building project. If 10 people are chosen at…

A:

Q: Suppose that at a large university 30% of students are involved in intramural sports. If we randomly…

A: Obtain the probability that fewer than 6 of these students are involved in intramural sports. The…

Q: It has been stated that about 41% of adult workers have a high school diploma but do not pursue any…

A: The probability that a randomly selected adult worker who has a high school diploma but do not…

Q: In the 2017 Seattle mayoral election, Ed Murray received 53.0% of the votes, Mike McGinn received…

A: Given information- Ed Murray received = 53.0% votes Mike McGinn received = 46.5% votes Write-in…

Q: A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan…

A: Define the random variable x as the number of defective tables. Also, the probability of defects in…

Q: A Psychology class consists of 14 males and 36 females. If a random sample of n =3 students are…

A: Given that there are 14 males and 36 females. Given that n=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.