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IRINA_888 [86]
3 years ago
7

Which statement is correct?

Mathematics
1 answer:
abruzzese [7]3 years ago
3 0

Answer:

gvhbh

Step-by-step explanation:.

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Step-by-step explanation:

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A toy manufacturer wants to know how many new toys children buy each year. A sample of 601 children was taken to study their pur
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Answer:

The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

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The limits of the confidence interval can be calculated as

X \pm z*\frac{\sigma}{\sqrt{n}}\\\\LL=X-z*\frac{\sigma}{\sqrt{n}}=6.7-1.96*\frac{1.5}{\sqrt{601} } =6.7-0.1199=6.6\\\\UL=X+z*\frac{\sigma}{\sqrt{n}}=6.7+1.96*\frac{1.5}{\sqrt{601} } =6.7+0.1199=6.8

The confidence interval is 6.6<μ<6.8.

7 0
3 years ago
What is the mean absolute deviation for the data? 20,25,30,30,45
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Add them all together the divide what you get by 5
6 0
4 years ago
Is 15/20 a half or a whole?
Arte-miy333 [17]

Answer:

15/20 is neither its 3-quarters

Step-by-step explanation:

15/20 is 3/4 which is 75% therefore...

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