A mathematics placement test is given to all incoming freshmen at the College of Accountancy. A student who receives a grade below 35 is denied admission to the regular mathematics course and placed in a remedial class. The placement test scores and the final grades for 20 students who took the regular course were: Test Score Course Grade Test Score Course Grade 50 53 35 41 35 61 40 56 55 68 65 36 35 11 60 70 90 79 35 59 90 54 80 91 60 48 60 71 40 47 55 53 50 68 65 57 50 79 60 71 a. Plot a scatter diagram. b. Find the equation of the regression line to predict course grades from placement test scores. c. Graph the line on the scatterd. d. If 60 is the minimum passing grade, below which placement test score should students in the future be denied admission to this course?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
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Section: Chapter Questions
Problem 11.1EP
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A mathematics placement test is given to all incoming freshmen at the College of Accountancy. A student who receives a grade below 35 is denied admission to the regular mathematics course and placed in a remedial class. The placement test scores and the final grades for 20 students who took the regular course were:

Test Score

Course Grade

Test Score

Course Grade

50

53

35

41

35

61

40

56

55

68

65

36

35

11

60

70

90

79

35

59

90

54

80

91

60

48

60

71

40

47

55

53

50

68

65

57

50

79

60

71

a. Plot a scatter diagram.

b. Find the equation of the regression line to predict course grades from placement test scores.

c. Graph the line on the scatterd.

d. If 60 is the minimum passing grade, below which placement test score should students in the future be denied admission to this course?

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