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

question 13

Essay

Applicants for a particular job,which involves extensive travel in Spanish-speaking countries,must take a proficiency test in Spanish.The sample data below were obtained in a study of the relationship between the numbers of years applicants have studied Spanish and their score on the test.Using a 1% level of significance,do the data provide sufficient evidence to conclude that the slope of the regression line is not 0 and hence that number of years of study is useful as a predictor of score on the test? The regression analysis is given below.
Dependent variable is: Score
R-squared = 83.0%
s = 5.65138 with 10 - 2 = 8 degrees of freedom $$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { SE(Coeff) } & \text { t-ratio } & \text { P-value } \\\text { Constant } & 31.53333 & 6.360418 & 4.957745 & 0.00111 \\\text { Number of years } & 10.90476 & 1.744054 & 6.252538 & 0.000245\end{array}$$

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Definitions:

Western Hand Gestures

Hand signals that originate from Western cultures, used for communication and can vary in meaning across different cultures.

Obscene

Relating to content that is offensive or repugnant, often because of sexual or vulgar subject matter.

Planning Graphic

A visual representation used in the planning stage of a project or presentation to organize ideas and information.

Audience

The group of individuals for whom a piece of writing or other form of communication is intended or by whom it is consumed.