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Alisiya [41]
3 years ago
15

If you were to randomly survey 50 people from the phone books of 20 randomly chosen cities, would this be a random sample? Why o

r why not?
Mathematics
2 answers:
Sever21 [200]3 years ago
7 0

Answer:

It would not be a random fair sample, as the sample categories each should be 30 minimum for such sample tests to be effective. There are 20 cities so the maximum any category group can be sampled is 3 per city and 2 from other cities as 50/2 = 25 = 2.5 each. Therefore by having data from other cities this creates 20 other categories as the samples are based on geographic wider scale such survey would require 30 from each city to show effectiveness and it would require reliable data of 30 from from each city instead of 2-3 each city.

Step-by-step explanation:

kotegsom [21]3 years ago
3 0

Answer:

no.

Step-by-step explanation:

The survey has too small of a group to be random.

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Juli2301 [7.4K]

Answer:

The domain of the function should be:

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Step-by-step explanation:

Given the expression

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The domain of a function is the set of input or arguments for which the function is real and defined

We know that the value, inside the radicand, is the number found inside a radical symbol which must be greater than 0, otherwise, it would make the function undefined,

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In other words, the domain of the function should be:

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Therefore, the domain of the function:

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