study was undertaken to see how accurate food labeling for calories on food that is considered "reduced calorie".  The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared.  The data is in the following table ("Calories datafile," 2013).  Table:  Percent Differences

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 15PPS
icon
Related questions
Question

QDES.B

A study was undertaken to see how accurate food labeling for calories on food that is considered "reduced calorie".  The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared.  The data is in the following table ("Calories datafile," 2013). 

Table:  Percent Differences Between Measured and Labeled Food

National Advertised

Regionally Distributed

Locally Prepared

2

41

15

-28

46

60

-6

2

250

8

25

145

6

39

6

-1

16.5

80

10

17

95

13

28

3

15

-3

 

-4

14

 

-4

34

 

-18

42

 

10

 

 

5

 

 

3

 

 

-7

 

 

3

 

 

-0.5

 

 

-10

 

 

6

 

 

 

Do the data indicate that at least two of the mean percent differences between the three groups are different?  Test at the 10% level.

**********************************************************************

Let x1 = percent difference of calories between measured and labeled reduced calorie food that is nationally advertised

Let x2 = percent difference of calories between measured and labeled reduced calorie food that is regionally distributed

Let x3 = percent difference of calories between measured and labeled reduced calorie food that is prepared locally.

Let μ1 = mean percent difference of calories between measured and labeled reduced calorie foods that are nationally advertised

Let μ2 = mean percent difference of calories between measured and labeled reduced calorie foods that are regionally distributed

Let μ3 = mean percent difference of calories between measured and labeled reduced calorie foods that are prepared locally.

 

(iv)  Calculate sample mean and sample standard deviation for sample percent differences between measured and labeled food that is advertised nationally.

Enter sample mean in decimal form to nearest thousandth, then comma, then sample standard deviation in decimal form to nearest hundredth.  Examples of correctly entered answers: 

13.278,2.31 

0.274,0.06

-10.301,0.79

(v)  Calculate sample mean and sample standard deviation for for sample percent differences between measured and labeled food that is distributed regionally.

Enter sample mean in decimal form to nearest thousandth, then comma, then sample standard deviation in decimal form to nearest hundredth.  Examples of correctly entered answers: 

13.278,2.31 

0.274,0.06

-10.301,0.79

 

 (vi)  Calculate sample mean and sample standard deviation for sample percent differences between measured and labeled food that is prepared locally.

Enter sample mean in decimal form to nearest thousandth, then comma, then sample standard deviation in decimal form to nearest hundredth.  Examples of correctly entered answers: 

13.278,2.31 

0.274,0.06

-10.301,0.79

 
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Functions and Change: A Modeling Approach to Coll…
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning