Exhibit 10-3 A Statistics Teacher Wants to See If There Is Any

question 36

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.
-Refer to Exhibit 10-3. What is the conclusion that can be reached about the difference in the average final examination scores between the two classes? (Use a .05 level of significance.)

• A)There is a statistically significant difference in the average final examination scores between the two classes.
• B)There is no statistically significant difference in the average final examination scores between the two classes.
• C)It is impossible to make a decision on the basis of the information given.
• D)There is a difference, but it is not significant.

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Definitions:

Treasury Stock

Stock that has been repurchased by the issuing company, reducing the amount of outstanding stock on the open market.

Sales Price

The amount of money charged for a product or service, or the sum received upon the sale of a product or service.

Paid-In Capital

Funds received from investors in exchange for shares of the company's stock, representing equity financing as opposed to debt.

Excess

The amount by which something, such as inventory or revenue, exceeds what is normal, necessary, or specified, often indicating surplus or overproduction.