Suppose that 50% of American adults have attended a college for at least one semester. If we select a simple random sample of 400 American adults, what is the probability that at least 300 of the individuals in the sample have attended a college for at least one semester?

Q: At one private college, 34% of students are business majors. Suppose that 260 students are randomly…

A: The probability that the proportion of business students in the sample differs from the population…

Q: Suppose that you sampled 2 CEOs with replacement instead. How many different samples are possible,…

A: Sampling is a process which is used in statistical analysis. In sampling a predetermined number of…

Q: 1. Suppose that 31% of adults have at least one tattoo. If you sample 90 rand adults, what is the…

A: Z = p^-pp(1-p)n~N(0,1)

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: In a large population, 54 % of the people have been vaccinated. If 5 people are randomly selected,…

A: Given data: 54% of the people have been vaccinated.

Q: Airlines report that 45% of its flights are on time.  In a random sample of 80 flights, what is the…

A: Given, Let A be the event of success that Airlines report of its flights are on time Random sample…

Q: If one of these 210 individuals is selected at random, what is the probability that the person is a…

A: Here use Bayes Rule

Q: According to a candy​ company, packages of a certain candy contain 18​% orange candies. Find the…

A: The proportion of orange candies in a certain package is : p=0.18 The sample size is given to be…

Q: 1. Suppose that 31% of adults have at least one tattoo. If you sample 90 random adults, what is the…

A: From the given information the probability that adult have tattoos is .31. Samples are taken random…

Q: In a large population, 51% of the people have been vaccinated. If 5 people are randomly selected,…

A: Probability of selecting a person who has been vaccinated is 51% or 0.51 Number of observation = 5…

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: In a statistics class, there are 18 male and 10 female students; 6 of the females are from the…

A:

Q: If a single student is selected at random, what is the probability of "has a dog" OR "does not have…

A: It is given that Number of students with dog = 16 Number of students without cat = 78 Number of…

Q: In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are…

A: Consider X be random variable which follows binomial distribution indicates the students belongs to…

Q: If math. Professor receives on average of 5 e-mail messages per day from Students, then the…

A:

Q: A survey reveals that 80% of the eligible people in a certain county vote during a county election.…

A: Here, n = 70 and p = 0.80.

Q: Suppose that 50% of adult Australians believe that Australia should apply to host the next rugby…

A: Given: p=0.5 n=150

Q: Fifty-eight percent of runaways in the United States are female. If 20 runaways are selected at…

A: Given Information Probability of female on the Runaways p = 0.58 Let X denotes No of female No of…

Q: Suppose that 56% of students in a college have a smart phone. If you select three students at…

A: Solution: It is given that 56% of students in a college have a smart phone.  Thus, probability that…

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: 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: In a certain conservative precinct, 69% of the voters are registered Republicans. What…

A: Solution: Given data; P = 0.69 Sample size (n) = 100 To find: P( X >= 58) =?

Q: Assume that in a group of 12 individuals, seven prefer football and five prefer cricket. A random…

A: Given : n = individuals = 12 football = 7 cricket = 5 a) Exactly two prefer football : =C27×C15C312…

Q: In a large population, 55% of the people have been vaccinated. If 3 people are randomly selected,…

A: Let "X" be the people that have been vaccinated.

Q: According to a recent survey, 35% of respondents drive Japanese-made cars. From a random sample of…

A: Let X be tbe number of driving a Japanese-made car from Binomial distribution with probability (p)=…

Q: A class consists of 23 women and 31 men. If a student is randomly selected, What is the probability…

A: Given data, No of Men=31 No of women=23 Total no of students=23+31= 54 P(Student is man)=?

Q: Suppose that 29% of all residents of a community favor annexation by a nearby municipality. The…

A: Consider that p is population proportion of all residents of a community favor annexation by a…

Q: In a certain college, 20% of the physics majors belong to ethnic minorities.  If 10 students…

A: Given information- We have given a problem of the binomial distribution. Probability of the physics…

Q: If 20 percent of the mice used in an experiment will become very aggressive after having been…

A: 3.  Given Information :  If 40 percent of the mice used in an experiment will become very aggressive…

Q: In a large population, 66% of the people have been vaccinated. If 3 people are randomly selected,…

A: Let the random variable X denote the no. of people have been vaccinated and it follows binomial…

Q: accounting professor claims that no more than one quarter of undergraduate business students will…

A:

Q: In a large population, 64 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Proportion of people vaccinated (p) = 0.64 Proportion of people not vaccinated (q) : q=1-pq=0.36 n =…

Q: 56% of Americans are active voters. If a sample of 40 random Americans is selected, what is the…

A:

Q: In a certain high-risk group, the chances of a person having suffered a heart attack are 55%. If 6…

A: From the given information, probability of success is given by as follows: p=0.55 n=6 x=1…

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 class consists of 10 males and 30 females. If one student is randomly selected from the class,…

A: We have given the  that  10 males  30 females  Total = 40

Q: If you know that 30 percent of all high school graduates go to college. From 20 graduates selected…

A: We have to find given probability.

Q: Suppose a group of students take an influenza test and 96% of the students test positive. What is…

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: If two people are chosen with replacement from the data, what is the probability that both are…

A: Given contingency table is :   Athletic Shoes Sandals Dress Shoes Other Total Men…

Q: If 60% of all women are employed outside the home, find the probability that in a sample of 20…

A: Given,         n=20         P= 0.60         q=1-p=1-0.60=0.40       PX=x=nCx Px1-Pn-1;…

Q: If a person in this town is selected at random, what is the probability that the individual is…

A: As per Bartleby guidelines, only one is to be answered; please upload the other separately. Given…

Q: Suppose that it is known that 45% of eighteen-year-olds in a particular city do not have a driver's…

A:

Q: Suppose that 28% of people own dogs. If two people are randomly selected, what is the probability…

A: Given that 28% of people own dogs. Sample size, n = 2

Q: Eight percent of Americans have a master's degree. If five Americans are selected at random, what is…

A: Given,n=5p=0.08A random variable X~Binomial(n=5 , p=0.08)P(X=x)=5x0.08x1-0.085-x   ;  x=0,1,..5

Q: A random sample of 15 persons is taken from a population in which 42% are Muslims. What is the…

A: It is given that a random sample of 15 persons is taken from a population in which 42% are Muslims.

Q: On one large campus, 18% of students surveyed said that they spend less than an hour a night…

A: Let X denotes the number of students spend less than hour a night studying. Here, n= 3 and p = 18%…

Q: In a large population, 71 % of the people have been vaccinated. If 5 people are randomly selected,…

A:

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.