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

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 given below to find a 99% confidence interval
For the slope of the regression line. Dependent variable is: Score
$\mathrm { R }$ squared $= 83.0$ 웅

$s = 5.65138$ with $10 - 2 = 8$ degrees of freedom
$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { s.e. of Coeff } & \text { t-ratio } & \text { prob } \\ \text { Constant } & 31.53333 & 6.360418 & 4.957745 & 0.00111 \\ \text { Number of years } & 10.90476 & 1.744054 & 6.252538 & 0.000245 \end{array}$

A) $( 5.23,16.57 )$
B) $( 5.05,16.76 )$
C) $( 25.70,37.40 )$
D) $( 6.88,14.93 )$
E) $( 9.16,12.65 )$

Correct Answer:

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