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 33arrests last month, 25were 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? answer .01 b.State the null and alternate hypotheses. Which one? Its the third. H0: p< 0 .7; H1: p= 0.7 H0: p≠0.7; H1: p= 0.7 H0: p= 0.7; H1: p≠0.7 H0: p= 0 .7; H1: p< 0.7 H0: p= 0.7; H1: p> 0.7 c. What sampling distribution will you use? Its the last one. The Student's t, since np> 5 and nq> 5. The Student's t, since np< 5 and nq< 5. The standard normal, since np< 5 and nq< 5. The standard normal, since np> 5 and nq> 5. d.What is the value of the sample test statistic? (Round your answer to two decimal places.) answer .72 e. Find the P-value of the test statistic. (Round your answer to four decimal places.)

Name: Is the national crime rate really going down? Some sociologists say ye
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: 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. Acco

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Concept explainers

Topic Video

Question

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 33arrests last month, 25were 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? answer .01

b.State the null and alternate hypotheses. Which one? Its the third.

H₀: p< 0 .7; H₁: p= 0.7

H₀: p≠0.7; H₁: p= 0.7

H₀: p= 0.7; H₁: p≠0.7

H₀: p= 0 .7; H₁: p< 0.7

H₀: p= 0.7; H₁: p> 0.7

c. What sampling distribution will you use? Its the last one.

The Student's t, since np> 5 and nq> 5.

The Student's t, since np< 5 and nq< 5.

The standard normal, since np< 5 and nq< 5.

The standard normal, since np> 5 and nq> 5.

d.What is the value of the sample test statistic? (Round your answer to two decimal places.) answer .72

e. Find the P-value of the test statistic. (Round your answer to four decimal places.)

Expert Solution

Step by step

Solved in 2 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions