/*! 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} Q 106. Attend church, live longer? One ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q 106. (page 269)

Attend church, live longer? One of the better studies of the effect of regular attendance at religious

services gathered data from a random sample of 3617 adults. The researchers then measured lots of variables, not just the explanatory variable (religious activities) and the response variable (length of life). A news article said: 鈥淐hurchgoers were more likely to be nonsmokers, physically active, and at their right weight. But even after health behaviors were taken into account, those not attending religious services regularly still were about 25% more likely to have died.鈥�57 What conclusion can we draw from this study? Explain.

Short Answer

Expert verified

No conclusions can be drawn from this study.

Step by step solution

01

Given information

Number of adults, n=3617

According to the news report, churchgoers were more likely to be nonsmokers, physically active, and of a healthy weight. Even after accounting for health behaviors, people who did not attend religious services on a regular basis were roughly 25% more likely to die.

02

Concept

Human studies must be approved by an institutional review board in advance. Before taking part, all participants must express their informed consent. Any information regarding the study participants must be kept private.

03

Explanation

Researchers conducted a study in response to the topic, claiming that going to church makes people live longer lives. So they took a bunch of measurements. As a result, no inferences can be drawn from this study because it is quite likely that churchgoers will be more interested in maintaining a healthy lifestyle in general, and so the religious aspect merely demonstrates correlation, not causation. As a result, no conclusions can be derived from this investigation.

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

Customer satisfaction A department store mails a customer satisfaction survey to people who make credit card purchases at the store. This month, 45,000

people made credit card purchases. Surveys are mailed to 1000 of these people, chosen at random, and 137 people return the survey form. Identify the

population and the sample.

Cell phones and brain cancer One study of cell phones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators matched each cancer patient with a person of the same age, gender, and race who did not have brain cancer, then asked about the use of cell phones. Result: 鈥淥ur data suggest that the use of handheld cellular phones is not associated with risk of brain cancer.鈥�

(a) Is this an observational study or an experiment? Justify your answer.

(b) Based on this study, would you conclude that cell phones do not increase the risk of brain cancer? Why or why not?

When we take a census, we attempt to collect data from

(a) a stratified random sample.

(b) every individual selected in an SRS.

(c) every individual in the population.

(d) a voluntary response sample.

(e) a convenience sample.

A sampling at the mall You have probably seen the mall interviewer, approaching people passing by with a clipboard in hand. Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate.

Internet charges (2.1) Some Internet service providers (ISPs) charge companies based on how much bandwidth they use in a month. One method that ISPs use for calculating bandwidth is to find the 95th percentile of a company鈥檚 usage-based on samples of hundreds of 5-minute intervals during a month.

(a) Explain what 鈥�95th percentile鈥� means in this setting.

(b) Which would cost a company more: the 95th percentile method or a similar approach using the

98th percentile? Justify your answer.
See all solutions

Recommended explanations on Math Textbooks

Pure Maths

Read Explanation

Decision Maths

Read Explanation

Discrete Mathematics

Read Explanation

Applied Mathematics

Read Explanation

Logic and Functions

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.