WebZine A magazine is considering the launch of an on-line edition. The magazine plans to go ahead only if it’s convinced that more than 25% of current readers would subscribe. The magazine contacted a simple random sam-ple of 500 current subscribers, and 137 of those surveyed expressed interest. What should the company do? Test anappropriate hypothesis and state your conclusion. Be surethe appropriate assumptions and conditions are satisfiedbefore you proceed.

Q: t appears that not all people are equally vulnerable to cancer.
People from some ethnic groups have…

A: Solution:

Q: Hawaii state law requires that businesses offer health insurance to employees that work at least 20…

A: The objective is to obtain the variable of interest, the nature of the sample is being considered,…

Q: You are hired by a university health services department to examine the relationship between flu…

A: 1. The research hypothesis is, whether flu vaccination had really worked for treating flu or not.…

Q: A newsletter publisher believes that 72% of their readers own a Rolls Royce. A testing firm believes…

A: From the provided information, A newsletter publisher believes that 72% of their readers own a Rolls…

Q: Make 1 situation in your community where you can apply hypothesis testing. Answer also the questions…

A: Consider the scenario of the  regular playing hours of a children in the community. I want to check…

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

A: Given that,The total number of surveyed students is 64.Therefore, the sample size is The number of…

Q: You are conducting contract research for a client that involves a questionnaire survey. The client…

A:

Q: Perform the following hypothesis test of a proportion: HO: p = 0.125 HA: p 0.125 The sample…

A:

Q: Assume that you plan to test a claim that p1 - p2 > 0. Use the given sample sizes and numbers of…

A: The sample proportions are

Q: According to the 2010 Census, 16% of people in the United States are of Hispanic or Latino origin.…

A: a. Let p be the population proportion of Hispanic people than the nation as a whole and questions…

Q: Your local school board wants to determine the proportion of people who plan on voting for the…

A: Note:- As per our policy, we can answer only three subparts of a question. Please make a new request…

Q: According to the M&M Mars company, 30% of M&M's are brown. A researcher thinks the claim is false…

A:

Q: A quality control inspector needs to know if customers are getting fewer ounces of a soft drink than…

A: GivenA quality control inspector needs to know if customers are getting fewer ounces of a soft drink…

Q: If you conduct a hypothesis test every so often at a 95% level, about what fraction of the time do…

A:

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A:

Q: 1. An investigator wanted to determine whether smoking was associated with lung cancer. The…

A: Introduction: It is required to find the odds ratio and interpret it, and also to identify the type…

Q: the food marketing insititute reports that 28% of households spend less than $100 per week on…

A: the probability that less than 102 households spend less than $100 per week on groceries is…

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A: Consider that p is the population proportion and n is the sample size. The requirements under which…

Q: According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher…

A:

Q: Suppose that in the exit poll from the state of Florida during the year 2000 presidential elections…

A: Given: x=407, n=765p=xn=407765=0.532 The null and alternative hypothesis is, H0:P=0.5Ha:P>0.5 The…

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A: given data, claim:p≠0.30n=30030% owns cat p^=0.30α=0.10we have to complete hypotheisis for the given…

Q: In 2002, NCHS reported that 75% of children aged 2-17 saw a dentist in the past year. An…

A: Step 1: Suppose p is the true proportion of children aged 2-17 living in City B who use dental…

Q: Please see below. I need to see if this is correct and whether there is another way to find the…

A: Given that  Sample size n =100 Favorable cases x =7 Sample proportion p^=x/n

Q: You are a web designer process engineer for a company that sells jewelry online. You know that 35.0%…

A:

Q: Hypothesis testing is a systematic procedure for determining whether the results of an experiment…

A: Hypothesis testing is a systematic procedure for determining whether the results of an experiment…

Q: The manufacturer of a new hybrid sports utility vehicle (SUV) states that, on average. it gets at…

A: Given: The manufacturer of a new hybrid sports utility vehicle (SUV) states that, on average. it…

Q: We wish to examine the relationship between gender and attitudes towards saving. 45 males and 60…

A: To test whether two categorical variables are associated or not, the chi-square test of independence…

Q: In a survey of 490 drivers from the South, 396 wear a seat belt. In a survey of 360 drivers from the…

A: For South:For Northeast:Significance level:

Q: You want to know whether in the population, men and women differ in terms of their internet use. You…

A: The proportion of men said yes = 0.21 = p1The proportion of men said yes = 0.16 = p2   n1 = 100n2 =…

Q: A group of researchers wants to know whether men (population 1) are more likely than women…

A:

Q: You are hired by a university health services department to examine the relationship between flu…

A:

Q: unions. At the 10% significance level, do the data provide sufficient evidence to conclude that the…

A:

Q: Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective…

A: Suppose p is the true proportion of defects from scratches.

Q: A survey asked 1578 US residents: “Do you think the use of marijuana should be made legal, or not?”.…

A: From the provided information, Sample size (n) = 1578  61% of respondents said it should be made…

Q: Create a research hypothesis that would be answered using either a z- or a t- test. Include the…

A: The study aims to investigate whether there is a significant difference in the mean scores of…

Q: 3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On…

A:

Q: What is the chance of a panellist guessing the target sample using the 5-AFC method? 0.25 1/5 O 4/5…

A: Since it is a 5-AFC method, the chance of a panellist guessing the target sample is 1/5.

Q: The magazine Tech Worx reported that  89%  of software engineers rate the company they work for as…

A: A sample of 225 randomly chose software engineers in which 216 rated the company they work for a "a…

Q: People who sustain a concussion or a traumatic brain injury (TBI) are likely to experience sleep…

A: Given that   Researchers recruited a sample of 31 patients who had their first TBI 18 months earlier…

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.