Top Posters
Since Sunday
7
6
o
5
b
4
s
3
j
3
b
3
m
3
K
3
g
3
L
3
w
3
New Topic  
melisooflyy melisooflyy
wrote...
Posts: 173
Rep: 0 0
A month ago
Use the following to answer the questions below:

Fast food restaurants are required to publish nutrition information about the foods they serve. Nutrition information about a random sample of 15 McDonald's lunch/dinner menu items (excluding sides and drinks) was obtained from their website. We wish to use the total fat content (in grams) to better understand the number of calories in the lunch/dinner menu items at McDonald's. Computer output from a regression analysis and a scatterplot (with regression line) of the data are provided.

Use two decimal places when reporting the results from any calculations, unless otherwise specified.

The regression equation is Calories = 137.1 + 15.06 Total Fat (g)

PredictorCoefSE CoefTP
Constant137.0840.643.370.005
Total Fat (g)15.0551.6499.130.000
S = 62.7442     R-Sq = 86.5%     R-Sq(adj) = 85.5%

Predicted Values for New Observations

Total Fat (g) FitSE Fit95% CI95% PI
25513.516.7(477.4, 549.5)(373.2, 653.7)

A scatterplot with a regression line shows the relationship between Total fat and Calories. The horizontal axis is labeled, Total fat (grams) and has markings from 10 to 40 in increments of 5. The vertical axis is labeled, Calories and has markings from 200 to 800 in increments of 100. A regression line starts from (9, 285), increases toward the right, and ends at (40, 720). The dots are randomly scattered, such that a few dots lie above the regression line, a few dots lie below the regression line, and a few dots lie on the regression line. The concentration of the dots is more between the points 8 and 27 on the horizontal axis and between the points, 240 and 540 on the vertical axis. The dots are plotted as follows: (8, 240), (8, 350), (12, 300), (16, 490), (18, 290), (19, 380), (19, 400), (23, 410), (23, 540), (26, 500), (37, 620), (39, 760), and (40, 770). All values are approximate.


Use the equation of the least squares line to predict the number of calories in a menu item with 20 grams of fat.

▸ 410.60 calories

▸ 289.80 calories

▸ 334.44 calories

▸ 438.30 calories
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
Authors:
Read 20 times
1 Reply
Replies
Answer verified by a subject expert
shanej399shanej399
wrote...
Posts: 134
Rep: 1 0
A month ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

melisooflyy Author
wrote...

A month ago
Brilliant
wrote...

Yesterday
Good timing, thanks!
wrote...

2 hours ago
Thank you, thank you, thank you!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  989 People Browsing
Related Images
  
 6173
  
 239
  
 708
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 300