Math

StatisticsUnderstanding Basic StatisticsFor Problems 7-21. please provide the following information. (a) What is the level of significance? State the null and alternate hypotheses. (b) Check Requirements What sampling distribution will you use? Do you think the sample size is sufficiently large? Explain. Compute the value of the sample test statistic and corresponding z value. (c) Find the p value of the lest statistic. Sketch the sampling distribution and show the area corresponding to the p- value. (d) Based on your answers in parts (a) to (c). will you reject or fail to reject the null hypothesis? Are the data statistically significant at level α ? (e) Interpret your conclusion in the context of the application. Sociology: Crime Rate 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 (Source: True Odds by J. Walsh, Merritt Publishing). Suppose you are a sociologist in Rock Springs. Wyoming, and a random sample of police files showed that of 32 arrests last month. 24 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 % .BuyFind*launch*

8th Edition

Charles Henry Brase + 1 other

Publisher: Cengage Learning

ISBN: 9781337558075

Chapter 9.3, Problem 9P

Textbook Problem

For Problems 7-21. please provide the following information.

(a) What is the level of significance? State the null and alternate hypotheses.

(b) **Check Requirements** What sampling distribution will you use? Do you think the sample size is sufficiently large? Explain. Compute the value of the sample test statistic and corresponding *z* value.

(c) Find the *p* value of the lest statistic. Sketch the sampling distribution and show the area corresponding to the *p-* value.

(d) Based on your answers in parts (a) to (c). will you reject or fail to reject the null hypothesis? Are the data statistically significant at level

(e) **Interpret** your conclusion in the context of the application.

**Sociology: Crime Rate** 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,
*True Odds* by J. Walsh, Merritt Publishing). Suppose you are a sociologist in Rock Springs. Wyoming, and a random sample of police files showed that of 32 arrests last month. 24 were of males aged 15 to 34 years. Use a

Understanding Basic Statistics

Ch. 9.1 - Statistical Literacy Discuss each of the following...Ch. 9.1 - Statistical Literacy In a statistical test, we...Ch. 9.1 - Statistical Literacy If we fail to reject (i.e.,...Ch. 9.1 - Statistical Literacy If we reject the null...Ch. 9.1 - Statistical Literacy What terminology do we use...Ch. 9.1 - Statistical Literacy What terminology do we use...Ch. 9.1 - Statistical Literacy If the P-value in a...Ch. 9.1 - Statistical Literacy If the P-value in a...Ch. 9.1 - Statistical Literacy Suppose the P-value in a...Ch. 9.1 - Statistical Literacy Suppose the P-value in a...

Ch. 9.1 - Basic Computation: Setting Hypotheses Suppose you...Ch. 9.1 - Basic Computation: Setting Hypotheses Suppose you...Ch. 9.1 - Basic Computation: Find Test Statistic....Ch. 9.1 - Basic Computation: Find the Test Statistic....Ch. 9.1 - Veterinary Science: Colts The body weight of a...Ch. 9.1 - Marketing: Shopping Time How much customers buy is...Ch. 9.1 - Meteorology: StormsWeatherwise magazine is...Ch. 9.1 - Ford Mustang: Acceleration Motor Trend stated that...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.1 - For Problems 19-24, please provide the following...Ch. 9.2 - Statistical Literacy For the same sample data and...Ch. 9.2 - Statistical Literacy To test for an x...Ch. 9.2 - Statistical Literacy When using the Students t...Ch. 9.2 - Critical Thinking Consider a test for . If the...Ch. 9.2 - Critical Thinking Consider a test for .If the...Ch. 9.2 - Critical Thinking If sample data is such that for...Ch. 9.2 - Basic Computation: P-value Corresponding to t...Ch. 9.2 - Basic Computation: P-value Corresponding to t...Ch. 9.2 - Basic Computation: Testing , Unknown A random...Ch. 9.2 - Basic Computation: Testing , Unknown A random...Ch. 9.2 - (c) Find (or estimate) the P-value. Sketch the...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Please provide the following information for...Ch. 9.2 - Critical Thinking: One-Tailed versus Two-Tailed...Ch. 9.2 - Expand Your Knowledge: Two Confidence Intervals...Ch. 9.2 - Expand Your Knowledge: Confidence Intervals and...Ch. 9.2 - Confidence Intervals and Two-tailed hypothesis...Ch. 9.2 - Critical Region Method: Standard Normal Solve...Ch. 9.2 - Critical Region Method: students t Table 4 of the...Ch. 9.2 - Critical Region Method: Student'st Solve Problem...Ch. 9.2 - Critical Region Method: Student'st Solve Problem...Ch. 9.3 - Terminology Answer true or false. The margin of...Ch. 9.3 - Terminology Answer true or false. The margin of...Ch. 9.3 - Critical Thinking In general, if sample data are...Ch. 9.3 - Terminology Answer true or false. The margin of...Ch. 9.3 - Basic Computation: Testingp A random sample of 30...Ch. 9.3 - Basic Computation: Testingp A random sample of 60...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 7-21. please provide the following...Ch. 9.3 - For Problems 7-21, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - For Problems 721, please provide the following...Ch. 9.3 - Critical Region Method: Testing Proportions Solve...Ch. 9.3 - Critical Region Method: Testing Proportions Solve...Ch. 9.3 - Critical Region Method: Testing Proportions Solve...Ch. 9 - Terminology Answer each of the following...Ch. 9 - Terminology Answer each of the following...Ch. 9 - Statistical Literacy When testing how do we...Ch. 9 - Statistical Literacy What do we mean when we say a...Ch. 9 - Critical Thinking All other conditions being...Ch. 9 - Critical Thinking All other conditions being...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - Before you solve each problem below, first...Ch. 9 - "With Sampling. There Is Too a Free Lunch"This is...Ch. 9 - Review and discuss type I and type II errors...Ch. 9 - Review and discuss type I and type II errors...Ch. 9 - The following statements are very important. Give...Ch. 9 - In the text, it is said that a statistical test is...Ch. 9 - As access to computers becomes more and more...Ch. 9 - Statistical Literacy What are the values of the...Ch. 9 - Statistical Literacy According to the empirical...Ch. 9 - Statistical Literacy Please give a careful but...Ch. 9 - 4. Normal Distribution Oxygen demand is a term...Ch. 9 - Normal Approximation to the Binomial the majority...Ch. 9 - 6. Sampling Distribution Workers at a large toxic...Ch. 9 - Sampling Distribution p Do you have a great deal...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...Ch. 9 - In Problems 8-12, please use the following steps...

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