A Librarian Knows from Old Records That the Percentages of Checked-Out

question 55

Short Answer

A librarian knows from old records that the percentages of checked-out materials which are fiction, nonfiction, children's books, books on tape, and magazines are 35%, 25%, 20%, 10%, and 10%, respectively. The material checked out in each of the categories in a recent survey of 600 randomly chosen library items is listed below. Use these data to assess whether there has been a change in the distribution of checked-out library materials. State the hypotheses to be tested and use = 0.01 to interpret your results.
The hypotheses are: : = _______, = _______, = _______, = _______, = _______ :
______________ from the specified value(s).
Compute :
______________
Thus we ______________ .
Conclude that ______________ from those specified in .

---

Definitions:

Interest Groups

Organizations formed by individuals sharing a common interest or goal to influence public policy or opinion.

Headquarters

The main office or center of operations for an organization or company, where key administrative activities are coordinated.

Congress

Congress is the bicameral legislature of the United States, comprising the Senate and the House of Representatives, responsible for making federal laws.

Material Benefit

An advantage or gain, often in a tangible form, resulting from an action or a specific situation.