Question

a student kept a record of how much time she spent studying for each of her 20 - point psychology quizzes and her score on each quiz. complete parts a through d below
hours spent studying 0.50 0.75 1.00 1.25 1.50 1.75 1.75 2.00
quiz score 10 11 12 14 15 15 18 20
a. write each paired data as an ordered pair of the form (hours spent studying, quiz score). choose the set of ordered pairs that represents the paired data in the correct form below
a. (10,0.50)(11,0.75)(12,1.00)(14,1.25),
(15,1.50),(15,1.75),(18,1.75),(20,2.00)
b. (0.50,10),(0.75,11),(1.00,12),(1.25,14),
(1.50,15),(1.75,15),(1.75,18),(2.00,20)
c. (10,11),(12,14),(15,15),(18,20),(0.50,0.75),
(1.00,1.25),(1.50,1.75),(1.75,2.00)
b. what is the meaning of the ordered pair (1.25,14)? choose the sentence below that best describes the meaning of the ordered pair
a. the student has to study for 1.25 hours to earn a quiz score of 14
b. when the student studied for 1.25 hours, her quiz score was 14
c. when the student studies for 1.25 hours, her quiz score will be 14

Explanation:

For part a, an ordered pair is of the form (x,y) where x is hours spent studying and y is quiz score. Looking at the table, when hours is 0.50, score is 10 so (0.50,10), when hours is 0.75, score is 11 so (0.75,11) and so on.
For part b, an ordered pair (a,b) in this context means when the first variable (hours) has value a, the second variable (score) has value b. It is a record of past data, not a prediction.

Answer:

a. B. (0.50,10),(0.75,11),(1.00,12),(1.25,14),(1.50,15),(1.75,15),(1.75,18),(2.00,20)
b. B. When the student studied for 1.25 hours, her quiz score was 14