According to the National Center for Health Statistics (2004), 22.4% of adults are smokers. A random sample of 300 adults is obtained. Subquestion: What would the minimum number of adults need to be in order to ensure the sampled values are independent of each other?

Q: In performing linear spline interpolation, the se- quence of the abscissa values of the data points…

A: In performing linear spline interpolation, the sequence of x-coordinate should be equally spaced.…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01significance​ level,…

A: Here it is needed to test, whether the proportions of​ agree/disagree responses are the same for…

Q: When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. Assume…

A: The sample proportion is the number of girls divided by the number of individuals in the sample .…

Q: Based on a Pitney Bowes survey, assume that 42% of consumers are comfortable having drones deliver…

A:

Q: During the early morning hours, customers arrive at a branch post office at an average rate of 57…

A: The expected arrival rate at the service point is 57 customer per hour. Clerks can provide at a rate…

Q: 2. A study found that 60 percent of college students say they are housing insecure, while 18 percent…

A: Given

Q: i want Z

A: The known values are, x = 328 n = 1160 The sample proportion is,

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

A: 1) Conditions for normal distribution: np>10 n(1-p)>10 Here n=0.67 n(1-p)>10…

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: A has multiple criteria for admitting students into one of its academic udent achievement scores…

A: We see that the dependent variable is chance of success for each student, which lies in the interval…

Q: The City of South Lake Tahoe, CA, has an Asian population of 1,419 people, out of a total population…

A: We perform Chi-square test for goodness of fit. Chi-square test Statistic is given by,…

Q: n. How many different random samples of seven accounts are possible?

A: Here population size N = 40 Sample size n = 7

Q: At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: Given that the proportion of students that ride bicycles to class = 35% or p =0.35 Let x= 28…

Q: A normal population has a mean of µ = 80 with σ = 20. a. If a single score is randomly selected…

A:

Q: . A quality analyst wants to determine whether three machines, all producing the same oduct, are in…

A: Given information: The data represents the measurements of each of the 3 different machines of the…

Q: For a population with σ = 12, how large a sample is necessary to have a standard error that is:…

A: What the standard error gives in particular is an indication of the likely accuracy of the sample…

Q: A newspaper article about the results of a poll states: "In theory, the results of such a poll, in…

A: Given:Confidence level = 0.99Z for 99% confidence level = 2.576 …using z-table

Q: Given a population of 5 and a sample size of 3, what is the tota possible random samples that can be…

A: Given:  Population size, N = 5  Sample size, n = 3  The total number of random samples that can be…

Q: According to the Pew Research Center,on the propotion of the American population who use only a…

A: A)Verifying the conditions:It is given that, the proportion of the American population who use only…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level,…

A: Option A is correct

Q: The technology committee has stated that the average time spent by students per lab visit has…

A: An outlier is a point that is not similar to other points. In the histogram, it is easy to identify…

Q: The HEALTH resources and services. reported that 6% of people who recieved Kidny transplants were…

A: Given Information: The proportion of the people who received kidney transplants under the age of 18…

Q: In a population where 27% of voters prefer Candidate A, how many voters must be sampled for the…

A:

Q: In a previous poll, 39% of adults with children under the age of 18 reported that their family ate…

A: We have to test the claim that the proportion of families with children under the age of 18 who eat…

Q: A report by the Gallup Poll stated that on average a woman visits her physician 5.8 times a year. A…

A: (a). Null and alternate hypotheses: Based on reading the problem, we know that we are working with a…

Q: A survey is conducted on the use of Facebook of adults in the United States, where 12,000 adults are…

A: Population of a survey means the entire group on which we are taking survey. Sample is a specific…

Q: In a previous poll, 34% of adults with children under the age of 18 reported that their family ate…

A: We have to find given hypotgesis.

Q: a study is conducted to access the impact of caffeine consumption, smoking, alcohol consumption, and…

A: Given data, p=40%=0.4 n=8 Let X be event that they consume caffiene and smoke. P(X<=6)=?

Q: 1. How many possible samples of size 2 can be formed? 2. List all these possible samples and…

A: here given box contains 4 balls numbered 1,3,5,7 two balls are chosen from this box with…

Q: Zach ,a Quality Process Engineer for Hershey Chocolates, pulled 16 random kisses from production and…

A: The formula of mean is,

Q: The grades of a sample of 9 students on a prelim exam (x) and on the midterm exam (y) are shown in…

A: Let X denote the prelim exam Let Y denote the midterm exam Calculation:

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: According to one study, 40% of online orders will experience a shipping delay. A second study wants…

A: Given P-cap=0.40 Margin of error=0.01 Alpha =0.05

Q: A researcher administers a new treatment to a sample of participants selected from a population with…

A: According to the provided information, a sample of participants selected from a population with µ =…

Q: such that at least 85% of the data are below and no more than 15% are above the value, is called…

A: The percentile is used to measure the location of a data set.

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: An education researcher randomly assigns a group of 47 fourth grade students to receive a new…

A: Solution: Two sample t test: If the collected two samples are independent, two sample t-test should…

Q: In a previous poll, 30% of adults with children under the age of 18 reported that their family ate…

A:

Q: 2. A study found that 60 percent of college students say they are housing insecure, while 18 percent…

A: Given:- A study found that 60 percent of college students say they are housing insecure, while 18…

Q: A random survey of enrollment at 10 community colleges across the United States yielded the…

A: Solution: Let X be the random variable. The given data for X is 2523, 1707, 5420, 2835, 1129, 5452,…

Q: A sample of 300 items was selected. compute the p-value

A:

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: What is the minimal number of remaining votes Tate needs to be assured of a win?

A: We just need more votes from other apart from more votes than all other candidates combined…

Q: If the alternate hypothesis states that p does not equal 4,000, what is the rejection region for the…

A: Given ,  alternate hypothesis Ha:μ≠4000

Q: z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal…

A:

Q: A telephone company claims that more than 15% of its customers have at least two telephone lines.…

A: It is given that Sample size n = 250 Number of customers who have at least two telephone lines, X =…

Q: In a current study, a random sample of 20 teachers from Georgia and an independent random sample of…

A: Given data:   Georgia Indiana   29227 33567   35464 41744   45458 51186   32113 30464…

Q: A public relations firm found that only 27% of voters in a certain state are satisfied with their US…

A: Given Percentage of voters satisfied with their US senator= 0.27

Q: Three random samples of sizes, 30, 48, and 32, respectively, are collected, and the three-sample…

A: It is given that there are three random variables and has three sample sizes defined as: n1-30 n2=48…

Q: A study found that among the 2300 college students who drank energy drinks daily 850 of them binge…

A: Given:

Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.