Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates in the 1980s and 1990s is demographics. It seems that the population is aging, and older people commit fewer crimes. According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34 years†. Suppose you are a sociologist in Rock Springs, Wyoming, and a random sample of police files showed that of 37 arrests last month, 19 were of males aged 15 to 34 years. Use a 1% level of significance to test the claim that the population proportion of such arrests in Rock Springs is different from 70%. (a) What is the level of significance? 0.01   What is the value of the sample test statistic? (Round your answer to two decimal places.) ?? (c) Find the P-value of the test statistic. (Round your answer to four decimal places.)???

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A:

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: The following information has been provided: Hypothesized Population Proportion (p0)(p_0) =…

Q: According to a study conducted by a statistical organization, the proportion of people who are…

A: n=100 p=0.72 The objective is to solve the given questions based on a study conducted by a…

Q: Use a 1% level of significance to test the claim that the population proportion of such arrests is…

A: Given that Sample size n = 33 Number of male arrests, X = 24 Level of significance = 1% = 0.01

Q: A survey of a group's web habits for the past month obtained the following information. 44% visited…

A: According to the given information, we have Given that a survey of a group's web habits for the past…

Q: Read this sample from the report. “In March 2015, 61 percent of workers in private industry had…

A: All categories do not represent industries not surveyed in the report because data points will not…

Q: The following table shows data about heart attack deaths in a certain town over one year.…

A:

Q: the loss-prevention officer of a large department-store chain is interested in finding out how…

A: Introduction: It is required to choose the type of survey the given situation uses.

Q: Fewer young people are driving. In year A, 64.9% of people under 20 years old who were eligible had…

A: You may need to use the appropriate appendix table or technology to answer this question.Fewer young…

Q: Is the national crime rate really going down? Some sociologists say yes! They sat that the reason…

A: H0:P =0.70H1:P≠0.70

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: The null and alternative hypotheses are;

Q: The percent of licensed U.S. drivers (from a recent year) that are female is 48.60. Of the females,…

A: It is given that, 48.60% drivers are female.

Q: Matrimony Monthly is a top-selling magazine that provides information for couples thinking about…

A: Given, The popular conception at the magazine has been that roughly 50% of first weddings take place…

Q: A researcher collected health information from 30 randomly selected patients living with diabetes.…

A: Given data:Male fasting glucose levels: 74, 72, 66, 90, 86, 87, 101, 99, 108, 101, 78, 112, 75, 73,…

Q: In order to draw meaningful conclusions regarding the sex and race breakdown of arrestees in New…

A: Note:Hello! Thank you for the question. We have tried to answer the question to the best of our…

Q: recent study reported that 12% of people toss away about half of what they buy at the grocery store.…

A: From the given information we conduct Z test for proportion.

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Let p be the population proportion  p=5.9%=0.059  Let X be the number of people who suffer from…

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: Here from the given information we conduct Z test for proprtion.

Q: The most obese countries in the world have obesity rates that range from 11.4% to 74.6%. Suppose…

A: The given data is as follows: Percent population obeseNumber of…

Q: First verify the model requirements. Select all that apply. MA. The samples are independent. B. The…

A: Given In 1945 Total number of adults surveyed = 1100 Number of adults who are total abstainers = 352…

Q: Do students with higher college grade point averages (GPAs) earn more than those graduates with…

A: a)    The scatter diagram indicates a positive linear relationship between GPA and salary.

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: Solution: Given information: n= 35 Sample size of arrests x= 26  arrests males aged 15 to 34 years…

Q: Does it seem to you that people tend to be absent more on some days of the week than on others?…

A: The categorical variable is day of the week. We have to test whether absences by the firm’s…

Q: In January 2001, 7000 men aged 45–54 years joined a new health insurance plan and were offered a…

A:

Q: 2.7 2.3 3.4 0.6 4.8 1.8 3.7 4.8 1.8 4.6 4.2 1.6 Determine the point estimate, x¯ and the sample…

A:

Q: Use the following scenario to answer the next 6 questions: M&Ms are your favorite vending machine…

A: Given Information Claim:- 24% of the candies per bag should be blue p = 0.24 n = 224, x = 38

Q: A company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant.…

A: Let A and B be the employees suffered accidents in last year and current year respectively P( A) =…

Q: he FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34 years.† Suppose you…

A:

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: Denote p as the true proportion of arrested males of age 15 to 34 years. It is reported that 70% of…

Q: A health statistics agency in a certain country tracks the number of adults who have health…

A: AgeProbabilityUnder 180.05218 – 64 0.12765 or older0.01322.4% of the people in the country are under…

Q: The price of a share of stock divided by the company's estimated future earnings per share is called…

A: The sample size n is 51.

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: Given : Claim : the population proportion of such arrests in Rock Springs is different from 70%.

Q: (a) What is the level of significance? State the null and alternate hypotheses. O Ho: p 0.7 Ho:p =…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: the anal crime rate really going down? Some sociologists say yes! They say that the reason for the…

A: Let X be a people such arrests in Rock Springs sample size (n) = 38.

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: The question is about hypothesis testingPopulation proportion of arrests of males aged 15 to 34…

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: Denote p as the true proportion of arrested males of age 15 to 34 years.

Q: What is the value of the sample test statistic? (Round your answer to two decimal places.) b) Find…

A: Given that Sample size n = 33 Number of males aged 15 to 34, X = 27 Level of significance = 0.05

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.