Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. A newspaper article states that only a majority of the Americans who decide not to go to college do so because they cannot afford it and uses the point estimate from the survey as evidence. Conduct a hypothesis test to determine if these data provide strong evidence supporting this statement. (a) What are the hypotheses for evaluating this test? (b) The test statistic is? (c) Based on the p-value for this test, what is the conclusion?

Q: t wishes to determine whether there is evidence that average family income in a community exceeds…

A: We see that, The null hypothesis states that average family income is equal to $25000 whereas the…

Q: An article in The Wall Street Journal implies that exactly half of all Americans would prefer being…

A: Answer:From the given data,Sample size (n) = 1040 respondentsSample proportion…

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: The Knight Foundation investigates whether high school students agreed with the statement that…

A:

Q: Marketing for many colleges and universities always imply that more school will result in greater…

A: Given: Two variables are education and income The test is to check whether more school results in…

Q: Is there an association between teenagers with Back pain and Gender? The study was also conducted…

A: It is needed to test, whether there is an association between teenagers with Back pain and Gender.

Q: It is hypothesized that the more expert a group of people examining personal income tax filings, the…

A: Given   Low-expertise group High-expertise group Sample size n1=30 n1=30 Sample variance…

Q: In Exercises, hypothesis tests are proposed. For each hypothesis test, a.determine the null…

A: a).Let µ be the mean lactation period of the population.The null hypothesis for the test is given…

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

A:

Q: A web developer has decided to use a new technique in web design. He divided his accounts into 10…

A: Followings are the Explanation of the question

Q: Understanding and predicting warranty expense is an Important determination for manufacturing firms.…

A:

Q: A corporate lawyer wonders whether the vigor of antitrust enforcement differed in the 2010s…

A: The following information has been provided:   Sample 1 = Firm 2000s Sample 2 = Firm 2010s…

Q: A publisher reports that 69%  of their readers own a particular make of car.  A marketing executive…

A: From the provided information,A publisher reports that 69% of their readers own a particular make of…

Q: A researcher hypothesizes that the average student spends less than 20% of their total study time…

A: Answer:- A researcher hypothesizes that the average student spends less than 20% of their total…

Q: A business school dean is contemplating proposing a change in the requirements for graduation. At…

A: It is given that sample size (n) is 100 and x is 56.

Q: 2. In a random sample of 87 college students, the average number of GroupMe messages handled in one…

A:

Q: In an attempt to determine why customer service is important to managers in the UAE, researchers…

A: Given Information:  Population mean (u) = 4.3 Standard size (s) = 0.574 Sample size (n) = 31  Level…

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

A:

Q: An economist wondered if people who go to the movies on weekdays go more or less often on Fridays…

A: Given that  Sample size n=50 Favorable cases x =14 Sample proportion p^=x/n  =14/50 =0.28

Q: A recent study randomly selected women from various countries around the world and collected…

A:

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: According to a 2017 survey by a reputable organization, patients had to wait an average of 24 days…

A: From the provided information,Sample size (n) = 40Level of significance (α) = 0.01

Q: Consider the random sample of college students.  Data on gender and Full or Part-time student course…

A:

Q: a. Ho : p = 0.28 Ha : p > 0.28 b. Level of Significance: a = 0.10 c. Computed Test Statistic: zcom =

A: HERE GIVEN , A research states that 28% of college degrees are from engineering courses. A…

Q: a.) Using the p-value method, test the claim that the mean salary for high school teachers in…

A:

Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. The principal introduces a…

A: At one school, the average amount of time that tenth-graders spend watching television each week is…

Q: Consider the results in Table 5. After running the regression, we test whether the coefficients of…

A: Consider the given table that shows the regression analysis of the data. The value of the…

Q: Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: Let X represents the cholesterol level before diet and Y represents the cholesterol level after…

Q: A public opinion organization wants to know if opinions on gun control laws have changed over time.…

A: Given that, a poll conducted in 2006 found that 55% of people favored stricter gun laws.

Q: A random sample of Americans were categorized according to their happiness and their income level.…

A: H0: Income and Happiness are independent HA: Income and Happiness are dependent

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: Which of these is NOT considered one of the traditional results of hypothesis testing reported in a…

A: The objective is to identify which of the given options is not considered one of the traditional…

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

A:

Q: a. What is the test statistic?  b. What is the p-value? (Round your answer to four decimal places.)…

A: a. The claim of the test is hat 60 percent of the students who take her Elementary Statistics class…

Q: Internet tax: The Gallup Poll asked 1043 U.S. adults whether they believed that people should pay…

A:

Q: According to a recent report​ (based on historical​ data), 47% of college student internships are…

A: Given claim: whether the proportion of college interns that had unpaid internships is different…

Q: use a hypothesis test to determine if the proportions are statistically different. A recent survey…

A:

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: survey was conducted at a community college of 102 randomly se udents who dropped a course in the…

A: Let A and B be the two attributes divided into r and s classes respectively and N is the total…

Q: If you are running a hypothesis test and increase your sample size, what will happen to your Type I…

A: Higher sample makes higher power of test And smaller sample makes small the power of test

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.