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zubka84 [21]
3 years ago
15

Suppose the two sinusoidal curves shown above are added together. which of the plots shown below best represents

Mathematics
1 answer:
Valentin [98]3 years ago
7 0
<span>The sinusoidal curves are shown in the picture attached.

Note that the two waves have the same amplitude (same "height"), the same wavelength (same distance from one peak to the next one) and therefore the same frequency, but different phase (they start in different points).

When you sum two different sinusoidal curves with the same amplitude and frequency, but different phase you get a sinusoidal wave with the same frequency as the original curves, but a different amplitude and a different phase.

Therefore, the correct answer is graph B).
</span>

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kotegsom [21]

Answer:

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Step-by-step explanation:

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3 years ago
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A)

<h3>The sample mean is  52</h3><h3>The claimed population mean is 44</h3>

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The sample mean is the mean found in the survey (of the sample of people). The sample mean is found by adding up the values and dividing by the sample size n. The larger n gets, the closer the sample mean should get to the population mean. This is assuming the sample is random and representative of the population.

The population mean is a claim made by another study/survey/etc. Usually generalized statements such as "Americans spent an average of X dollars (in year Y)" would have X be considered the population mean.

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B)

<h3>Sample mean is 3.42</h3><h3>Claimed population mean is 3.56</h3>

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Same idea as part A, but we're using different numbers and a different problem context.

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Note: The year numbers and the sample sizes are not used to answer any of the four questions above.

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3 years ago
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18 is less than 21.50 & there is only a one time fee for Shantay’s Shirts.

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D≈5.09

Hopefully this helps :)
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