Janet is studying the relationship between the average number of minutes spent exercising per day and math test scores and has collected the data shown in the table. The line of best fit for the data isy

=0.46x+66.4

.

Minutes

15

20

25

30

Test Score

73

76

78

80

(a) According to the line of best fit, the predicted test score for someone who spent23

minutes exercising is76.98

.

(b) Is it reasonable to use this line of best fit to make the above prediction?

Select the correct answer below:

The estimate, a predicted test score of76.98

,is reliable and reasonable.

The estimate, a predicted test score of76.98

,is unreliable but reasonable.

The estimate, a predicted test score of76.98

,is unreliable and unreasonable.

The estimate, a predicted test score of76.98

,is reliable but unreasonable.