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
.
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