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PolarNik [594]
3 years ago
6

A librarian is interested in the numbers of books that visitors check out from the library. She examines the checkout records of

250
randomly selected adult visitors.
Identify the population and sample for this situation.

A The population is all visitors of the library; the sample is the adult visitors
of the library.
B The population is all adult visitors of the library; the sample is the 250
visitors selected.
C The population is all visitors who check out at least 1 book from the
Library; the sample is the 250 visitors selected.
D The population is the 250 visitors selected; the sample is the 250 visitors
who check out at least 1 book from the library.​
Chemistry
2 answers:
kirill115 [55]3 years ago
8 0

Answer:

The Answer is B.)The population is all adult visitors of the library; the sample is the 250 visitors selected.

Explanation:

The population is the entire group of people or things to be studied. The sample is part of the population.

miss Akunina [59]3 years ago
6 0

Answer:

The answer B

Explanation:

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what information can a foliated metamorphic rock provide you about the conditions under which it formed
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3 0
3 years ago
Two isotopes of hypothetical element X exist with abundances of 30.00% 100X and 70.00% 101X. What is the approximate atomic mass
Rasek [7]

Answer:

C. 100.7 amu

Explanation:

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4 0
2 years ago
The density of sodium is 968 g/cm3. Suppose you need 250 gm of sodium for an experiment. Which volume of sodium do you need? a 2
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mass = 250 g

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Therefore:

D = m / V

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5 0
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