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Monica [59]
3 years ago
15

HELP RIGHT NOW AND ILL GIVE BRAINLY IF CORRECT

Mathematics
1 answer:
Stella [2.4K]3 years ago
7 0

Answer:

-9

Step-by-step explanation:

3^{-36}= 27^{-12}

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Answer:

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Step-by-step explanation:

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In the case that the <u>standard deviation of the population is known</u> and the population distribution is normal, even if the sample is small, <u>we will use a z-test</u>.

The usual case is to not know the standard deviation of the population, in which case a t-test is adequate instead of a z-test, taking into account the degrees of freedom of the sample.

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3 years ago
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lianna [129]

Using it's concept, it is found that the probability that a person chosen at random from this group has brown or green eyes is of \frac{13}{25}.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

Researching the problem on the internet, it is found that the group has 20 + 6 + 17 + 7 = 50 people, of which 20 + 6 = 26 have brown or green eyes, hence the probability is given by:

p = 26/50 = 13/25.

More can be learned about probabilities at brainly.com/question/14398287

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2 years ago
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Step-by-step explanation:

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