In order for applicants to work for the foreign-service department, they must take a test in the language of the country where they plan to work. The data below show the relationship between the number of years that applicants have studied a particular language and the grades they received on the proficiency exam. What is the best predicted value for y given x = 1.5? Assume that the variables x and y have a significant correlation.

Number of years, x

3

4

4

5

3

6

2

7

3

Grades on test, y

61

68

75

82

73

90

58

93

72