3 years ago

-2 + 6 < -10 What is the answer

Mathematics

1 answer:

Natali5045456 [20]3 years ago

8 0

Answer: I don’t know why don’t you think

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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The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

Standard deviation σ = 1.5

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The limits of the confidence interval can be calculated as

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

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im really sorry

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3 years ago

Please explain how you found the answer.

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35 divided by 5 = 7
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