Have you ever noticed that adults like the taste of some bitter foods that adolescents just cannot tolerate the taste of? Things like dark chocolate, grapefruit, coffee, etc. Ms.Wilson is interested in whether bitter flavors become more tolerable as people get older. She sets up a study in which subjects taste cups of coffee that are different strengths and picks their favorite one.
Ms. Wilson records the age of each subject, x, and the strength of the coffee in grams, y, that the subject liked the best.
Age of Subject 17 27 33 37 40
Strength of Coffee in grams 48 44 49 54 57
r = 1.__
y = 2.__ x + 3.__
If someone was 45 years old, what would the regression line predict for the strength of coffee they would prefer?
4.___
1.
a. 0.2518
b. 0.7343
c. 0.5392
d. 0.4129
2.
a. -0.728
b. 0.239
c. 0.788
d. 0.413
3.
a. 37.684
b. 41.338
c. 45.594
d. 47.331
4.
a. 48
b. 51
c. 56
d. 59
1. c. 0.5392
2. a. -0.728
3. c. 45.594
4. b. 51
Therefore, the regression line would predict that a 45-year-old subject would prefer coffee with a strength of 51 grams.