stics instructor at a large western university would like to examine the between the number of optional homework problems students do dur ter and their final course grade. She randomly selects 12 students for s em to keep track of the number of these problems completed during t mester. At the end of the class each student's total marks is recorded a

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Question 3
A statistics instructor at a large western university would like to examine the relationship
(if any) between the number of optional homework problems students do during the
semester and their final course grade. She randomly selects 12 students for study and
asks them to keep track of the number of these problems completed during the course of
the semester. At the end of the class each student's total marks is recorded along with their
final grade. The data follow in Table 2.
Table 2
Problem
51
Course Grade
62
68
66
66
67
72
73
72
78
73
76
58
62
65
68
76
77
78
78
84
85
91
75
Classify the direction and strength of the correlation
iv.
V.
Test the hypothesis for a significant linear correlation, a = 0.05
vi.
What is the valid prediction range for this setting?
Transcribed Image Text:Question 3 A statistics instructor at a large western university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final course grade. She randomly selects 12 students for study and asks them to keep track of the number of these problems completed during the course of the semester. At the end of the class each student's total marks is recorded along with their final grade. The data follow in Table 2. Table 2 Problem 51 Course Grade 62 68 66 66 67 72 73 72 78 73 76 58 62 65 68 76 77 78 78 84 85 91 75 Classify the direction and strength of the correlation iv. V. Test the hypothesis for a significant linear correlation, a = 0.05 vi. What is the valid prediction range for this setting?
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