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Alexxx [7]
2 years ago
8

This is your question​

Mathematics
1 answer:
LenaWriter [7]2 years ago
5 0
Answer:
See below.

Step-by-step explanation:
Cinder cone volcanoes = 13
Shield volcanoes = 18
Stratovolcanoes = 6

Total number of volcanoes:
= 13 + 18 + 6
= 37

________________
P (cinder cone):
13/37 = 0.35

P (shield):
18/37 = 0.49

P (stratovolcano)
6/37 = 0.17




Hope it helps ⚜


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Answer:

\frac{(99)(10)^2}{123.225} \leq \sigma^2 \leq \frac{(99)(10)^2}{77.046}

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Step-by-step explanation:

Data given and notation

s=10 represent the sample standard deviation

\bar x represent the sample mean

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\chi^2_{\alpha/2}=123.225

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80.341 \leq \sigma^2 \leq 128.495

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8.963 \leq \sigma \leq 11.336

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