In Order for Applicants to Work for the Foreign-Service Department $\mathrm { s_e }$

question 56

Multiple Choice

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 shows the relationship between the number of years that
Applicants have studied a particular language and the grades they received on the proficiency exam. Find the
Standard of estimate, $\mathrm { s_e }$ given that ? = 6.91x + 46.26. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | } \text { Number of years, } x & 3 & 4 & 4 & 5 & 3 & 6 & 2 & 7 & 3 \\\hline \text { Grades on test, } y & 61 & 68 & 75 & 82 & 73 & 90 & 58 & 93 & 72\end{array}$$

• A)4.578
• B)3.412
• C)5.192
• D)6.713

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Definitions:

Rods

In the eye, rod-shaped receptors of light that are sensitive to intensity only. Rods permit black-and-white vision.

Newborns

Refers to infants from birth to about 2 months of age, characterized by rapid physical and neurological development.

Depth Perception

The ability to perceive the distance of an object and the spatial relationship between objects in the environment.

Visual Cliff

An experimental apparatus designed to test infants' perception of depth and their ability to detect visual cliffs, indicating the development of visual and cognitive capabilities.