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AnnZ [28]
2 years ago
14

If a researcher needs a sample that is representative of the population they are studying, they could utilize a _______.

Mathematics
1 answer:
vova2212 [387]2 years ago
8 0

The researchers could utilize a probability sample.

Meaning of a Probability Sample

Every member of a population must have an equal chance of being chosen for a study in order for a sample to be considered a probability sample, and the researcher must be aware of this likelihood. The most typical type of sampling used in public opinion research, election polling, and other studies whose findings will be generalized to a larger population is probability sampling in which probability samples are made use of.

Probability Sample as the Representative of Population Sample

Here, a sample that qualifies for a representative of the population the researchers are studying, must consist of members having equal chances to be chosen for the study. Thus, a probability sample is the best representative of their study population.

Learn more about probability sample here:

brainly.com/question/28016369

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Step-by-step explanation:

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b⁴

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Determine the values of the letters to complete the conditional relative frequency table by column.
weqwewe [10]

Answer:

a=0.1\\b=0.85

Step-by-step explanation:

In this problem we are calculating the relative frequency conditional by columns.

Therefore the sum of the frequencies of each column must be equal to 1.

Then we use this condition to calculate the values of a and b

So:

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3 0
3 years ago
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If log2(13-8x)-log2(x^2+2)=2, what is the value of (13-8x/x^2+2)
suter [353]

Answer:

4

Step-by-step explanation:

There is a rule for logarithms that says:

\log(a)-\log(b)=\log(\frac{a}{b}).

This is actually called quotient rule and it's name is based off the right hand side of the equation there.

So you have that you can write your right hand side as:

\log_2(\frac{13-8x}{x^2+2}).

So your equation is:

\log_2(\frac{13-8x}{x^2+2})=2

Now let's write this in the equivalent exponential notation:

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So the value of the given fraction is 2^2=4.

Note! In general, the equivalent exponential form of \log_b(x)=y is b^y=x.

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