Solution Found!

Stats: Data and Models | 4th Edition | ISBN: 9780321986498 | Authors: Richard D. De Veaux, Paul F. Velleman, David E. Bock
Change Question

Body fat It is difficult to determine a person’s body fat

Chapter 6, Problem 71E

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 71E

Body fat It is difficult to determine a person’s body fat percentage accurately without immersing him or her in water. Researchers hoping to find ways to make a good estimate immersed 20 male subjects, then measured their waists and recorded their weights.

Waist(in.)

Weight(lb)

Body Fat(%)

Waist(in.)

Weight(lb)

Body Fat(%)

32

175

6

33

188

10

36

181

21

40

240

20

38

200

15

36

175

22

33

159

6

32

168

9

39

196

22

44

246

38

40

192

31

33

160

10

41

205

32

41

215

27

35

173

21

34

159

12

38

187

25

34

146

10

38

188

30

44

219

28

a) Create a model to predict %Body Fat from Weight.

b) Do you think a linear model is appropriate? Explain.

c) Interpret the slope of your model.

d) Is your model likely to make reliable estimates? Explain.

e) What is the residual for a person who weighs 190 pounds and has 21% body fat?

Questions & Answers

QUESTION:

Problem 71E

Body fat It is difficult to determine a person’s body fat percentage accurately without immersing him or her in water. Researchers hoping to find ways to make a good estimate immersed 20 male subjects, then measured their waists and recorded their weights.

Waist(in.)

Weight(lb)

Body Fat(%)

Waist(in.)

Weight(lb)

Body Fat(%)

32

175

6

33

188

10

36

181

21

40

240

20

38

200

15

36

175

22

33

159

6

32

168

9

39

196

22

44

246

38

40

192

31

33

160

10

41

205

32

41

215

27

35

173

21

34

159

12

38

187

25

34

146

10

38

188

30

44

219

28

a) Create a model to predict %Body Fat from Weight.

b) Do you think a linear model is appropriate? Explain.

c) Interpret the slope of your model.

d) Is your model likely to make reliable estimates? Explain.

e) What is the residual for a person who weighs 190 pounds and has 21% body fat?

ANSWER:

Step 1 of 11

Given that,

Researchers hoping to find ways to make a good estimate immersed 20 male subjects, then measured their waist and recorded their weights shown in the table at the top of the next column.

Waist (in.)

Weight (lb)

Body Fat (%)

Waist (in.)

Weight (lb)

Body Fat (%)

32

175

6

33

188

10

36

181

21

40

240

20

38

200

15

36

175

22

33

159

6

32

168

9

39

196

22

44

246

38

40

192

31

33

160

10

41

205

32

41

215

27

35

173

21

34

159

12

38

187

25

34

146

10

38

188

30

34

219

28

Add to cart

Study Tools You Might Need

Chapter: 1 Problem: 49P

Chemistry 11
Carry out the following conversions: (a) 1.42 light- years to miles (a light-year is an astronomical measure of distancethe distance traveled by light in a year, or 365 days; the speed of light is \(3.00 \times 10^{8}\) m/s). (b) 32.4 yd to centimeters, (c) \(3.0 \times 10^{10}\) cm/s to ft/s.

Chapter: 11 Problem: 51

Chemistry 9
Glycerin, C3H8O3, is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 164 g glycerin to 338 mL H2O at 39.88C? The vapor pressure of pure water at 39.88C is 54.74 torr and its density is 0.992 g/cm3 .

Chapter: 2 Problem: Problems 22

Inquiry into Physics 7
A 0.1-kg ball is attached to a string and whirled around in a circle overhead. The string breaks if the force on it exceeds 60 N. What is the maximum speed the ball can have when the radius of the circle is 1 m?

Chapter: 2 Problem: 2

Campbell Biology in Focus 2
Write an equation that uses the products of photosynthesis as reactants and the reactants of photosynthesis as products. Add energy as another product. This new equation describes a process that occurs in your cells. Describe this equation in words. How does this equation relate to breathing?

Chapter: 10 Problem: 8

Urban Economics 8
In a column of The State Paper (Columbia, South Carolina) on April 5, 2004, columnist John Monk describes the efforts of motorcycle riders to defeat a proposed law that would allow police to issue $25 tickets to automobile drivers and passengers who are not wearing seat belts. The law would not apply

Chapter: 18 Problem: 10

Principles of Economics 9
A storm destroys several factories, thereby reducing the stock of capital. What effect does this event have on factor markets? a. Wages and the rental price of capital both rise. b. Wages and the rental price of capital both fall. c. Wages rise, and the rental price of capital falls. d. Wages fall, a

Chapter: 5 Problem: 9

Principles of Economics 9
In competitive markets, farmers adopt new technologies that will eventually reduce their revenue because a. each farmer is a price taker. b. farmers are short-sighted. c. regulation requires the use of best practices. d. consumers pressure farmers to lower prices.

Chapter: 19 Problem: 19.69

Chemistry for today : general, organic, and biochemistry 9
Why is it necessary that protein molecules be enormous?

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back