A random sample of 800 adults was asked: “Do you believe current sentencing laws for non-violent crimes are too lenient, too strict, or just right?” The polling company compiled the data and separated the respondents by their education level. Is there evidence that opinion about sentencing laws for non-violent crimes is related to education level? Write appropriate hypotheses and check conditions.   Suppose the expected counts had not been given. Show how to calculate the expected count in the first cell (106.01).   How many degrees of freedom?   State your complete conclusion in context.

Q: State the null and alternative hypotheses. (Enter != for # as needed.) Ho H₂ Find the value of the…

A:

Q: Present a contingency table and analyze using the proper statistics. Discuss your findings.

A: The two categorical variables given are promotion and retired status,Given that,No. of employees…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A:

Q: In 2014, the Pew Research Centers American Trends Panel sought to better understand what Americans…

A: Solution: Let X be the number of adults correctly interpret a scatterplot and n be the sample number…

Q: ou are provided with a sample of sales volumes of few cities and is required to test whether the…

A:

Q: In 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check…

A: Given, The sample proportion is,

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: The test statistic is 1.59 and the P-value is 0.060.

Q: College students may be interested in whether or not their majors have any affect on starting…

A:

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: n=31, μ=709.3, x¯=722.3, s=81.1

Q: A restaurant chain would like to measure the proportion of customers who are generally satisfied…

A: During a 1-week period, 147 customers were surveyed and 93% of them reported as being either…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: Suppose there is a claim that a certain population has a mean, μ, that is different than 6. You want…

A: given data, claim :μ≠6α=0.05hypothesis:H0:μ=6H1:μ≠6critical value:±1.960test statistics:-2.615

Q: f a research study reports a very borderline significance level, just a very small amount outside of…

A:

Q: What are the null hypothesis ( H0 ) and the alternative hypothesis ( H1 ) that should be used for…

A: a) null Hypothesis H0 - μ =145     Alternate Hypothesis H1 - μ <> 145 (μ not equal to 145) b)…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given, n=119, x=31, α=0.05 Then, p^=31119=0.260504

Q: Most universities and colleges require an SAT score as one of the inputs to an admissions decision.…

A: It is given that the SAT scores for 10 students and their college GPAs.

Q: The 40-hour work week is considered the standard in American society today. Imagine you wish to use…

A: The t-statistic is generally higher than the z-statistic at smaller degrees of freedom, i.e. at…

Q: If we have a data set containing the age and marital status of large group of individuals and we ask…

A: Independent samples t test: The independent samples t-test can be used to examine a possible…

Q: Suppose an SAT preparation course makes the following statement in their advertising brochure: “We…

A: Given that Suppose an SAT preparation course makes the following statement in their advertising…

Q: 3) The management of an amusement park wanted to determine the amount of waiting time for the park's…

A: Answer can be given by using the formulas for mean, median, mode and midrange.

Q: How do I examine whether there is evidence that, in the population from which the respondents were…

A: Given information: The statement is given related to checking the significance of the mean. Find:…

Q: (d) Suppose that the union decides to perform another statistical test using the same population,…

A: This question is related to hypothesis testing and probability of committing a Type II error. The…

Q: Consider a hypothesis test to decide whether the mean annual consumption of beer in the nation's…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: A survey was conducted to determine whether adult participation in physical fitness programs varies…

A: State the hypotheses. Null hypothesis: Alternative hypothesis: Correct option: Option 1.

Q: The National Technology Readiness Survey sponsored by the Smith School of Business at the University…

A: Denote p2009 and p2004 as the true population proportions of spam emails deleted by Americans in…

Q: Discuss all possible factors that would affect the validity of test scores

A: A test score is the value of the test statistic when the values of the parameter are put.

Q: An article published in the “American Journal of Public Health” describes the results of a health…

A: No. of  years of age or older male convicts in the administered health survey, The sample proportion…

Q: Bloomberg Research Corporation conducted a random survey on tax preparation methods. Data was…

A: The question is about sampling distribution.Given :No. of adults in a survey ( n )  = 17400No. of…

Q: When the p-value is greater than alpha, the conclusion for the hypothesis test is to reject the null…

A:

Q: propriate test to determine if high-income individuals have higher credit scores at the a = 0.05…

A: Given n=39 Standard deviation=84.3 X bar=714.6 Mu=702.5

Q: The mean annual salary of (public) classroom teachers is $55.4 thousand. A hypothesis test is to be…

A: Given that he mean annual salary of (public) classroom teachers is $55.4 thousand.

Q: An article published in the “American Journal of Public Health” describes the results of a health…

A: No. of 50 years of age or older male convicts in the administered health survey, The sample…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: The random variable credit scores are normally distributed. The population mean is 707.9. We have to…

Q: In 2002, the General Social Survey Conducted by StatsSa, participants was asked the following…

A: According to given information we determine the following The null and alternative hypothesis will…

Q: What is the conclusion? A recent survey done by the Philippine Housing Authority found that 35% of…

A: The hypotheses are given below: Null hypothesis: H0:p=0.35 Alternative hypothesis: H1:p≠0.35 Since…

Q: A researcher groups college student in a study based on their year in college (freshman, sophomore,…

A: A researcher groups college student in a study based on their year in college (freshman, sophomore,…

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: Submit a short and broad description of prevalence of gambling in Australia. You should draw…

A: Gambling is a widely popular recreation and enjoyable, harmless activity with a high risk and has…

Q: According to the Federal Trade Commission report on consumer fraud and identity theft, 23% of all…

A: a) Statistic: The statistical measure that describes the features of the sample that is taken from…

Q: home improvement company is interested in improving customer satisfaction rate from the 58%…

A: We have given that  Sample size n=273 favorable cases x=171  Population proportion p=58%=0.58 Sample…

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.