According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we randomly select 200 adults and find that​ 68% of the sample plays games on their smartphone. Which of the following correctly describes the distribution for the proportion of adults in the sample who play games on their​ smartphone?   A. ​pˆ ~​ AN(0.68, 0.0330)   B. ​pˆ ~​ AN(0.80, 0.0283)   C. ​pˆ ~​ AN(0.80, 0.0330)   D. X​ ~ AN(160,​ 5.6569)

Q: Suppose that, as part of a game at a charity carnival, players are invited to spin a wheel for a…

A: Given data, n=40 p=0.55 mean of the sampling distribution of p^=?

Q: Suppose that in a large class at a major university, the instructor announces that the average grade…

A: Given information- We have given the average grade on an exam = 72 Since we know that from the…

Q: It is known that 40% of all customers at a service station pay with a credit card. If a random…

A: Given  p=0.40, x=75, n=200

Q: Which of the following is the correct shape and justification of the sampling distribution of Py…

A: It is given that For vegetarians, sample size nv = 21, proportion pv = 0.76 For carnivores, sample…

Q: Suppose 40% of all college students have a computer at home and a sample of 100 students is taken.…

A: Given, N= 100 P= 0.40

Q: The Centers for Disease Control and Prevention say that about 24% of teenagers vape. A college has…

A: It is given that, n = 645 and p=0.24.

Q: A university carried out a study that gives the age distribution for a representative sample of 375…

A:

Q: According to a survey in a​ country, 33​% of adults do not own a credit card. Suppose a simple…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: According to a survey in a country, 15% of adults do not own a credit card. Suppose a simple random…

A:

Q: Previously, an organization reported that teenagers spend 8.5 hours per week, on average, on the…

A: To test whether a population mean is equal to the claimed value or not, a hypothesis test can be…

Q: In a population where 6% of  the voters prefer Candidate A, how many voters must be sampled for the…

A: Given information: PCandidate A=6100=0.06

Q: 4. In 2014, the University of Houston carried out a study for the Texas Lottery Commission. The…

A: The null and alternate hypothesis are H0 : p1=0.14, p2=0.2, p3=0.19, p4=0.18, p5=0.14, p6=0.15HA:…

Q: Aynsleigh runs a business from home and ships items to her customers across the country. She…

A: Given,sample size(n)=50sample proportion(p^)=0.85

Q: In a city, 70% of the people prefer Candidate A. Suppose 30 people from this city were sampled. (a)…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Previously, an organization reported that teenagers spend 12.5 hours per week, on average, on the…

A: Note: " Since you have asked multiple sub-parts, we will solve the first three sub-parts for you. If…

Q: The U.S. Census Bureau reported that in 2015 the proportion of adult Americans, ages 25 and older,…

A: a) Assume that p is population proportion of adult Americans, ages 25 and older, who have a…

Q: Suppose an automotive repair company wants to determine the current percentage of customers who keep…

A:

Q: Notice that the expected frequencies are missing. What are the correct expected frequencies?

A:

Q: The following are the systolic blood pressures (mm Hg) of 12 patients undergoing drug therapy for…

A:

Q: From a pack of 52 cards 4 cards are drawn one after another with replacement. Find the mean and…

A: Given that, from a pack of 52 cards 4 cards are drawn one after another with replacement. We need to…

Q: It is known that 40% of all customers at a service station pay with a credit card. If a random…

A: Given : It is known that 40% of all customers at a service station pay with a credit card.

Q: Suppose that, as part of a game at a charity carnival, players are invited to spin a wheel for a…

A: Given Information: Sample size (n) = 40 p = 0.55 For large samples, the sample proportion is…

Q: A university carried out a study that gives the age distribution for a representative sample of 375…

A: Chi square χ2 good ness of fit test is helpful to check  whether the proportion in each category…

Q: According to a survey in a country, 19% of adults do not own a credit card. Suppose a simple random…

A: Dear student as per guidelines we answer the first three subparts only.

Q: In a population where 76 % of voters prefer Candidate A, how many voters must be sampled for the…

A: The sampling distribution of the sample proportion is approximately normal with at least 5 expected…

Q: An amusement park keeps track of the percentage of individuals with season passes according to age…

A: Introduction: The claim of the amusement park authorities regarding the proportions of visitors is…

Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

A: From the provided information, A doctor believes that 80% of all patients having a particular…

Q: 2. A poll done by Kellogg Corporation asked a random sample of 500 high school students whether they…

A: Given that the sample size is 500 and the population proportion is 60%. a) The mean of the sampling…

Q: The Mars candy company states that 20% of all milk chocolate M&Ms are blue. In a sample of 80 M&Ms,…

A:

Q: 1 out of every 10 fish have blue on them. If you were to take a random sample of 60 fish, what is…

A: Let X denote the number of blue fish out of n = 60 fish. Let p denote the probability of getting…

Q: Suppose I want to know how many primary care physicians (PCPs) that Americans have had in their…

A: Given data : 1,3,4,6,10,3,2,1,14,11 Arrange in ascending order 1,1,2,3,3,4,6,10,11,14

Q: In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been…

A: a) From the given information, the number of men had never been screened is 40 and the sample size…

Q: According to the Internal Revenue Service, 75% of all tax returns lead to a refund. A random sample…

A: From the provided information, 75% of all tax returns lead to a refund so the population proportion…

Q: In a population where 63% of voters prefer Candidate A, how many voters must be sampled for the…

A: If p is the population proportion, then to satisfy the conditions for normality, we need to check  n…

Q: A dad has three children, one aged 12 years old, one aged 17 years old, and one aged 22 years old.…

A:

Q: A person took a sample of 200 people to see the relationship between those who liked the movies…

A: Consider the given conditional distribution table. We need to find the conditional distribution of…

Q: An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over…

A: A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Q: Suppose that, as part of a game at a charity carnival, players are invited to spin a wheel for a…

A: Solution: Given information: n = 40 Sample size  p= 0.50 Population proportion

Q: A researcher conducts a mileage economy test involving 80 cars. The frequency distribution…

A: The data are given, a) Percentage of the cars got 35 mpg or more can be calculated as, = Percentage…

Q: the shape of the distribution is symmetrical and the data set has mean = 13, and Median = 12.2,…

A: Given data, Mean =13 Median=12.2 mode=? If the shape of the distribution is symmetrical and the data…

Q: A simple random sample of 100 high school students who took the AP exam in statistics is taken from…

A: Solution:- from given information Null hypothesis H0:p1=0.4,p2=0.25,p3=0.23,p4=0.12Alternate…

Q: An amusement park keeps track of the percentage of individuals with season passes according to age…

A: Given: n=200 Hypothesis: H0:p(child)=0.23,p(teen)=0.45,p(adult)=0.20,p(senior)=0.12. H0: The…

Q: In a population where 67% of voters prefer Candidate A, how many voters must be sampled for the…

A: Given information: P(Candidate A) =67100=0.67

Q: A telecommunications company knows that 90% of their customers own smart phones. Ten customers are…

A: Let "X" be the customers who own smartphones. The variance of the binomial distribution is given by

Q: Movie critics claim that 68% of adults and 79% of teenagers would recommend seeing the newest action…

A: Mean of the sampling distribution of proportions :  If repeated random samples of a given size n…

Q: 2. Throughout the state of Kansas, there are approximately 4 potholes per 100 miles of highway. If…

A: Given,The average no.of potholes per 100 miles of highway=4A random variable…

Q: Previously, an organization reported that teenagers spend 12.5 hours per week, on average, on the…

A: t-test: If the given sample size is less than or equal to 30 then that is a small sample test.…

Q: Suppose an advertising company wants to determine the current percentage of customers who read print…

A: Given dataError = 5% = 0.05Confidence level = 0.98Significance level = α=1-0.98=0.02

Q: In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been…

A: We have a random sample of 50 men and 20 of them had never been screened Also it was thought that…

Q: Suppose public opinion is split 65% against and 35% for increasing taxes to help balance the federal…

A: We have given that  Population proportion p=35%=0.35 Sample size n =500

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.