Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 3: Q.12 (page 160)

Do heavier people burn more energy? The study of dieting described in Exercise 10 collected data on the lean body mass (in kilograms) and metabolic rate (in calories) for 12female and7male subjects. The figure below is a scatterplot of the data for all 19subjects, with separate symbols for males and females.

Does the same overall pattern hold for both women and men? What is the most important difference between the sexes?

Short Answer

Expert verified

Both women follow the same general pattern.

The most significant distinction is that men appear to have a larger lean body mass and metabolic rate than women.

Step by step solution

01

Given Information 

The figure below is a scatterplot of the data for all 19 subjects, with separate symbols for males and females.

02

Explanation 

To find the most important difference:

Because the red dots appear to be a continuation of the blue dot pattern, both women and males have the same overall pattern.

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.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

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

Acid rain Refer to Exercise 39. Would it be appropriate to use the regression line to predict pH after1000 months? Justify your answer.

Teaching and research A college newspaper interviews a psychologist about student ratings of the teaching of faculty members. The psychologist says, “The evidence indicates that the correlation between the research productivity and teaching rating of faculty members is close to zero.” The paper reports this as “Professor McDaniel said that good researchers tend to be poor teachers, and vice versa.” Explain why the paper’s report is wrong. Write a statement in plain language (don’t use the word “correlation”) to explain the psychologist’s meaning.

Does social rejection hurt? We often describe our emotional reaction to social rejection as “pain.” Does social rejection cause activity in areas of the brain that are known to be activated by physical pain? If it does, we really do experience social and physical pain in similar ways. Psychologists first included and then deliberately excluded individuals from a social activity while they measured changes in brain activity. After each activity, the subjects filled out questionnaires that assessed how excluded they felt. The table below shows data for 13subjects.7“Social distress” is measured by each subject’s questionnaire score after exclusion relative to the score after inclusion. (So values greater than 1show the degree of distress caused by exclusion.) “Brain activity” is the change in activity in a region of the brain that is activated by physical pain. (So positive values show more pain.)

Discuss what the data show. Follow the four-step process.

Measurements

on young children in Mumbai, India, found this least-squares line for predicting height y from the arm span y⏜=6.4+0.93xMeasurements are in centimeters (cm).

By looking at the equation of the least-squares regression line, you can see that the correlation between height and arm span is

(a) greater than zero.

(b) less than zero.

(c) 0.93

(d) 6.4

(e) Can’t tell without seeing the data.

To determine the least-squares regression line:
See all solutions

Recommended explanations on Math Textbooks

Geometry

Read Explanation

Pure Maths

Read Explanation

Applied Mathematics

Read Explanation

Logic and Functions

Read Explanation

Decision Maths

Read Explanation

Statistics

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.

Sign-up for free