Applicants for a particular job,which involves extensive travel in Spanish-speaking countries,must take a proficiency test in Spanish.The sample data were obtained in a study of the relationship between the numbers of years applicants have studied Spanish and their score on the test.Use the regression analysis and summary statistics given below to find a 95% confidence interval for the average score of an applicant who has studied Spanish for 2.2 years.
Dependent variable is: Score
R-squared = 83.0%
S = 5.65138 with 10 - 2 = 8 degrees of freedom
A)51.5 to 59.5
B)43.1 to 70.9
C)43.7 to 67.3
D)48.9 to 62.2
E)40.9 to 70.2

Question

Applicants for a particular job,which involves extensive travel in Spanish-speaking countries,must take a proficiency test in Spanish.The sample data were obtained in a study of the relationship between the numbers of years applicants have studied Spanish and their score on the test.Use the regression analysis and summary statistics given below to find a 95% confidence interval for the average score of an applicant who has studied Spanish for 2.2 years. 
Dependent variable is: Score
R-squared = 83.0%
S = 5.65138 with 10 - 2 = 8 degrees of freedom 
A)51.5 to 59.5 
B)43.1 to 70.9 
C)43.7 to 67.3 
D)48.9 to 62.2 
E)40.9 to 70.2

Quizplus · Accepted Answer

The Answer of Applicants for a particular job,which involves extensive travel in Spanish-speaking countries,must take a proficiency test in Spanish.The sample data were obtained in a study of the relationship between the numbers of years applicants have studied Spanish and their score on the test.Use the regression analysis and summary statistics given below to find a 95% confidence interval for the average score of an applicant who has studied Spanish for 2.2 years. 
Dependent variable is: Score
R-squared = 83.0%
S = 5.65138 with 10 - 2 = 8 degrees of freedom 
A)51.5 to 59.5 
B)43.1 to 70.9 
C)43.7 to 67.3 
D)48.9 to 62.2 
E)40.9 to 70.2

Applicants for a Particular Job,which Involves Extensive Travel in Spanish-Speaking