/*! 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 12 Does living in the South cause h... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Problem 12

Does living in the South cause high blood pressure? Data from a group of 6278 whites and blacks questioned in the Third National Health and Nutritional Examination Survey between 1988 and 1994 (see CNN.com web site article of January 6,2000 , titled "High Blood Pressure Greater Risk in U.S. South, Study Says") indicates that a greater percentage of Southerners have high blood pressure than do people in any other region of the United States. This difference in rate of high blood pressure was found in every ethnic group, gender, and age category studied. List at least two possible reasons we cannot conclude that living in the South causes high blood pressure.

Short Answer

Expert verified
Two possible reasons why we cannot conclude that living in the South causes high blood pressure are: 1) Presence of alternate underlying causes such as lifestyle choices, dietary habits etc. that are unrelated to the geographic location. 2) The existence of potential confounding factors that might have not been accounted for in the survey, like age, genetic predisposition, or socio-economic status, which may influence both the geographical location and high blood pressure.

Step by step solution

01

Analyzing the Statement

Reflect on the data presented, which demonstrates a higher rate of high blood pressure among Southerners. Recognize that there's a correlation between living in the South and high blood pressure, but correlation does not imply causation.
02

Contemplating Alternate Causes

Think about possible alternate explanations that could affect the rate of high blood pressure. Factors such as dietary habits, levels of physical activity, climate, stress and other lifestyle aspects could contribute to high blood pressure, irrespective of location.
03

Consider the Possibility of Confounding Factors

Acknowledge the possibility of confounding factors that could influence both the supposed cause (living in the South) and effect (high blood pressure). These factors may have not been controlled or identified during the survey, and could include variables like age, ethnicity, genetic predisposition, and socio-economic status.

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

A survey of affluent Americans (those with incomes of \(\$ 75,000\) or more) indicated that \(57 \%\) would rather have more time than more money (USA Today, January 29,2003 ). a. What condition on how the data were collected would make the generalization from the sample to the population of affluent Americans reasonable? b. Would it be reasonable to generalize from the sample to say that \(57 \%\) of all Americans would rather have more time than more money? Explain.

During the previous calendar year, a county's small claims court processed 870 cases. Describe how a simple random sample of size \(n=50\) might be selected from the case files to obtain information regarding the average award in such cases.

The head of the quality control department at a printing company would like to carry out an experiment to determine which of three different glues results in the greatest binding strength. Although they are not of interest in the current investigation, other factors thought to affect binding strength are the number of pages in the book and whether the book is being bound as a paperback or a hardback. a. What is the response variable in this experiment? b. What explanatory variable will determine the experimental conditions? c. What two extraneous variables are mentioned in the problem description? Are there other extraneous variables that should be considered?

Can choosing the right music make wine taste better? This question was investigated by a researcher at a university in Edinburgh ( www.decanter.com/news). Each of 250 volunteers was assigned at random to one of five rooms where they were asked to taste and rate a glass of wine. In one of the rooms, no music was playing and a different style of music was playing in each of the other four rooms. The researchers concluded that cabernet sauvignon is perceived as being richer and more robust when bold music is played than when no music is heard. a. Is the study described an observational study or an experiment? b. Can a case be made for the researcher's conclusion that the music played was the cause for the higher rating? Explain.

The authors of the paper "Popular Video Games: Quantifying the Presentation of Violence and its Context" (Journal of Broadcasting \& Electronic Media [2003]: \(58-76\) ) investigated the relationship between video game rating- suitable for everyone (E), suitable for 13 years of age and older (T), and suitable for 17 years of age and older (M) - and the number of violent interactions per minute of play. The sample of games examined consisted of 60 video games-the 20 most popular (by sales) for each of three game systems. The researchers concluded that video games rated for older children had significantly more violent interactions per minute than did those games rated for more general audiences. a. Do you think that the sample of 60 games was selected in a way that makes it reasonable to think it is representative of the population of all video games? b. Is it reasonable to generalize the researchers' conclusion to all video games? Explain why or why not.
See all solutions

Recommended explanations on Math Textbooks

Geometry

Read Explanation

Statistics

Read Explanation

Decision Maths

Read Explanation

Pure Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Mechanics Maths

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.