In Order for Applicants to Work for the Foreign-Service Department $\hat{\hat { y }}$

question 2

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. Construct
A 95% prediction interval for y given x = 2.5, $\hat{\hat { y }}$ = 6.91x + 46.26, and $\mathrm { s } _ { \mathrm { e } }$ = 4.578. Round interval to two decimal
Places. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | } \text { Number of years, } x & 3 & 4 & 4 & 5 & 3 & 6 & 2 & 7 & 3 \\\hline \text { Grades on test, } y & 61 & 68 & 75 & 82 & 73 & 90 & 58 & 93 & 72\end{array}$$

• A) \(51.50 < y < 75.57\)
• B) \(60.23 < y < 91.42\)
• C) \(55.12 < y < 87.34\)
• D) \(47.32 < y < 72.13\)

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Definitions:

Mode of Transportation

The method or means by which people, materials, and goods are moved from one place to another, such as by land, air, sea, or rail.

Cargo

Goods or produce transported, generally for commercial gain, by ship, aircraft, train, or truck.

Expensive

An attribute of goods or services characterized by a high price point, often due to quality, scarcity, or brand reputation.

Least Expensive

The option that requires the lowest financial outlay or cost.