Business Non response questionnaires were mailed to 300 randomly selected businesses in each of three categorical sizes. The following data shows the number of responses. Size of Company Response No Response Small 175 125 Medium 145 155 Large 120 180 Test the claim that the size of the company is independent of the company`s response State the null and alternative  hypothesis    Give the p-value   Give a conclusion for the hypothesis test

Q: Conduct the hypothesis test and provide the test statistic and the critical value, and state the…

A: Obtain the value of the test statistic. The value of the test statistic is obtained below as…

Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…

A: Denote μ1, μ2 as the population mean number of students who “love” statistics and who “adore”…

Q: A hospital pilots a new postoperative procedure for their patients. Hospital administration would…

A: Given information: Significance level α=0.1 The given observed results are in the following table:…

Q: Are average SAT Math scores higher the second time students take the exam? Perform a hypothesis test…

A: Calculate the mean for both the exams using formula. Means are:

Q: Explain the difference between an independent and dependent sample. Choose the correct answer below.…

A: The objective is to explain the difference between an independent and dependent sample.

Q: A random sample of 855 births included 431 boys. Use a 0.05 significance level to test the claim…

A: State the hypotheses. That is, the proportion of new born babies are boys equals 0.515. That is,…

Q: Directions: Use the hypothesis testing procedures to solve the problem. The figure below gives the…

A: The test is conducted to check whether there is a difference in the mean tar content in a pack for…

Q: A clinical trial is investigating the effectiveness of a new pain reliever drug. 40 people with…

A: A t-test  is a type of inferential statistic used to determine if there is a significant difference…

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: There are two categorical variables which are subject and polygraph test indication. We have to test…

Q: de reading level. An English teacher believes that the true figure is higher and with the help of an…

A: Given: Reading grade level (x) Number of pages (f) 5 6 6 10 7 4 8 2 9 2 10 1

Q: (a) a = 0.01, P = 0.06 answer: (b) a = 0.07, P = 0.06 answer: (c) a = 0.06, P = 0.001 answer:

A: (a)Level of significance ɑ=0.01, p value=0.06   (b)level of significance ɑ=0.07, p value=0.06 (C)…

Q: he critical values for a (two sided) hypothesis test at the 90% level are: Group of answer choices…

A:

Q: The test statistic for the hypothesis test specified The p-value for the hypothesis test specified

A: The table shows the frequencies of highest educational attainment by region.

Q: Which of the following statements is/are true about one-sided and two-sided hypothesis tests?…

A: (1) one-sided tests can have lower power than two-sided tests, FALSE because the two-sided test is…

Q: High School Band - In most US high schools, students can play an instrument in three types of bands.…

A:

Q: Hypothesis testing will consist of four hypothesis tests which you need to complete. While you will…

A:

Q: What type of hypothesis test should researchers use to determine... (a) if there is a significant…

A: The choice of the specific type of hypothesis test to use depends on the research question and the…

Q: Dependent-measures t-test. As a college admissions counselor, you are tasked with reviewing a set of…

A:

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: A car insurance company claims that 92% of its customers are happy with their service. You randomly…

A: Given,   The sample proportion is,

Q: In each part, we have given the significance level and the P-value for a hypothesis test. For each…

A:

Q: Click the icon to view the table. Determine the null and alternative hypotheses. OA. Ho: Polygraph…

A: df=(row-1)(column -1)

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: We want to find the Chi square value by using contingency table.

Q: real estate company claims that 44% of all home buyers find their real estate agent through a…

A:

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: Given data is appropriate for testing of hypothesis to test chi-square for independence of…

Q: Which can be used for hypothesis testing for matched data pairs? OT test O Sign test O Signed-rank…

A: For the given data Select the correct choice

Q: Some people claim that they can tell the difference between a diet soda and a regular  soda in the…

A: In the experiment, diet and ordinary sodas will be differentiated.The sample size is  people.The…

Q: A marketing agency wanted to determine if a new commercial changed people's opinion about a company.…

A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

Q: Suppose 245 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given that, X=54,n=24 The sample proportion is, The null and alternative hypothesis is, The…

Q: High School Band ~ In most US high schools, students can play an instrument in three types of bands.…

A: The given frequencies are as follows:

Q: What is the test statistic for this hypothesis test, critical value, pvalue of the hypothesis test?

A: Here dependent variable (y) is the employee's attitude and the independent variable (x) is job…

Q: Conduct the hypothesis test and provide the test statistic and the critical value, and state the…

A: The formula for the chi-square test statistic is given as,

Q: the effectiveness of a business school preparation course, 8 students took a general business test…

A: By applying a paired-'t' test ,   sample size,n= 8 Mean (d̄) =Σd/n              = -240/8…

Q: For which of the following situations would it be appropriate to conduct a hypothesis test for two…

A:

Q: Does more education lower a person’s level of prejudice? The number of years of education and the…

A: The data shows the number of years of education and the score on a prejudice test for ten people.

Q: A study of 17 randomly selected people had 6 of them say that they exercise at least 30 minutes per…

A:

Q: Sixty-eight percent of online courses taught at community colleges nationwide were taught by…

A: Answer Favorable cases [x] =34Sample size [n] =44population proportion [p] =68%…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.