/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 9 Consider the population that con... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 7: Problem 9

Consider the population that consists of all employees of a large computer manufacturer. a. Give an example of a question about this population that could be answered by collecting data and using it to estimate a population characteristic. b. Give an example of a question about this population that could be answered by collecting data and using it to test a claim about this population.

Short Answer

Expert verified
a. An example of a question that could be answered by collecting data and using it to estimate a population characteristic could be 'What is the average salary of employees at this large computer manufacturer?' b. An example of a question that could be answered by collecting data and using it to test a claim about this population could be 'Does the ratio of male to female employees stand at 3:2 at the computer manufacturing company?'

Step by step solution

01

Formulate a question for estimating a population characteristic

This involves formulating a question that requires estimation of a particular characteristic of the population. For example, the question could be 'What is the average salary of employees at this large computer manufacturer?' This question seeks to estimate the average salary, which is a characteristic of the employee population at the computer manufacturing company.
02

Formulate a question for testing a claim about the population

This involves formulating a question that requires testing a specific claim about the population. For example, the question could be 'Does the ratio of male to female employees stand at 3:2 at the computer manufacturing company?' This question seeks to test the claim about the gender ratio amongst the population, thus a hypothesis test would need to be conducted to confirm or disprove the claim.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Fans of professional soccer are probably aware that players sometimes fake injuries (called dives or flops). But how common is this practice? The articles "A Field Guide to Fakers and Floppers" (Wall Street Journal, June 28,2010 ) and "Red Card for Faking Footballers" (Science Daily, Oct. 10,2009) describe a study of deceptive behavior in soccer. Based on this study, it was possible to categorize injuries as real or fake based on movements that were characteristic of fake injuries (such as an arched back with hands raised, which is meant to attract the attention of a referee but which is not characteristic of the way people fall naturally). Data from an analysis of a sample of soccer games were then used to make the following statements: On average, referees stop a soccer game to deal with apparent injuries 11 times per game. \- On average, there is less than one "real" injury per soccer game. Are the inferences made ones that involve estimation or ones that involve hypothesis testing?

The authors of the paper "Flat-Footedness Is Not a Disadvantage for Athletic Performance in Children Aged 11 to 15 Years" (Pediatrics [2009]: e386-e392) collected data from 218 children on foot arch height and motor ability. The resulting data were used to investigate the relationship between arch height and motor ability.

The article "Display of Health Risk Behaviors on MySpace by Adolescents" (Archives of Pediatrics and Adolescent Medicine [2009]: 27-34) described a study of 500 publically accessible MySpace Web profiles posted by 18 -yearolds. The content of each profile was analyzed, and the researchers used the resulting data to conclude that there was support for the claim that those involved in sports or a hobby were less likely to have references to risky behavior (such as sexual references or references to substance abuse or violence). Is the described inference one that resulted from estimation or one that resulted from hypothesis testing?

"Doctors Praise Device That Aids Ailing Hearts" (Associated Press, November 9,2004 ) is the headline of an article describing a study of the effectiveness of a fabric device that acts like a support stocking for a weak or damaged heart. People who consented to treatment were assigned at random to either a standard treatment consisting of drugs or the experimental treatment that consisted of drugs plus surgery to install the stocking. After two years, \(38 \%\) of the 57 patients receiving the stocking had improved, and \(27 \%\) of the 50 patients receiving the standard treatment had improved. The researchers used these data to determine if there was evidence to support the claim that the proportion of patients who improve is higher for the experimental treatment than for the standard treatment.

The article "Tots' TV-Watching May Spur Attention Problems" (San Luis Obispo Tribune, April 4, 2004) describes a study that appeared in the journal Pediatrics. In this study, researchers looked at records of 2,500 children who were participating in a long-term health study. For each child, they determined if the child had attention disorders at age 7 and the number of hours of television the child watched at age 3 . They hoped to use the resulting data to learn about how these variables might be related.
See all solutions

Recommended explanations on Math Textbooks

Probability and Statistics

Read Explanation

Decision Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Logic and Functions

Read Explanation

Mechanics Maths

Read Explanation

Discrete Mathematics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.