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Debora [2.8K]
3 years ago
8

Does the point (9.5, 144) make sense in this context? Explain

Mathematics
2 answers:
Flura [38]3 years ago
7 0

Answer:

No it doesn't

Step-by-step explanation:

You have a table that relates the number of packets of flavoring with the ounces of water needed to make soup.

The rate of ounces of water needed for each packet of flavour is a constant and can be computed as follows:

24/2 = 60/5 = 84/7 = 120/10 = 144/12 = 12

The point (9.5, 144) where 9.5 refers to number of packets of flavoring and 144 to ounces of water,doesn't make sense because doesn't satisfied the previous ratio.

144/9.5 ≈ 15.16

Stolb23 [73]3 years ago
6 0
No, (9.5, 144) does not make sense because there is no point of 9.5 and when you divide the ounces of water by the flavoring packets you end up with 12, and if you were to simplify that it would end up with 1 flavor packet and 12 ounces of water.
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Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36  

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Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by \alpha=1-0.80=0.20 and \alpha/2 =0.10. And the critical value would be given by:

z_{\alpha/2}=\pm 1.28

Solution to the problem

The margin of error for the proportion interval is given by this formula:  

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n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

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And rounded up we have that n=656

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Step-by-step explanation:

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