Exhibit 10-3
a Statistics Teacher Wants to See If There

question 25

Multiple Choice

Exhibit 10-3
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information. $$\begin{array}{l}& \text { Today } & \text { Five Years Ago } \\\overline { \mathrm { x } } & 82.0 & 88 \\\sigma ^ { 2 } & 112.5 & 54 \\\mathrm { n } & 45.0 & 36\end{array}$$
$$\begin{array}{cc}\text { Today } & \text { Five Years Ago }\\82.0 & 88 \\112.5 & 54 \\45.0 & 36\end{array}$$ $\begin{array}{cc}\text { Today }&\text { Five Years Ago }\\82.0 & 88 \\112.5 & 54 \\45.0 & 36\end{array}$ n
-Refer to Exhibit 10-3. The standard error of is

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Definitions:

Outsourcing

The business practice of hiring parties outside a company to perform services or create goods that traditionally were performed in-house by the company's own employees.

T-Shirts

Casual shirts made of fabric, typically having short sleeves and no collar, popular for everyday wear.

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The basis or rationale for decisions or actions based on financial or economic factors.

Old Wardrobe

An old wardrobe typically refers to a collection of clothing that may be outdated or no longer in fashion.