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unit_5_test_part_2.docx
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Sampling
1. The owner of a large shopping center wants to survey a sample of 12 store owners and ask them if they
would stay open one hour late one evening for a charity event. He divides the stores into two main categories
and labels them as shown.
Clothing and Jewelry: 001–150
Food and Services: 151–200
(a) Suppose the owner wants an equal number of stores from each category. Find the numbers for the
stores in the sample if the owner starts at line 108.
(b) Suppose the owner wants the number of stores in the sample to be proportional to the number of
stores in each category. Find the numbers for the stores in the sample if the owner starts at line 116.
Answer:
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2. Forty-two percent of the members in a book club prefer to read nonfiction books. Use the Table of Random
Digits on pages A-3 to A-4 in the reference guide to simulate randomly selecting and asking 15 members, “Do
you prefer to read fiction or nonfiction books?”
Let the digits 01 through 42 represent a response of nonfiction.
(a) Start at the beginning of line 122 and write the first 30 digits as two-digit numbers. Circle those that
represent a response of nonfiction.
(b) Write p and p for the situation.
Answer:
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Copying or distributing without K12’s written consent is prohibited.
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