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MrRissso [65]
3 years ago
12

10x is greater than or equal to 120 cm^2

Mathematics
1 answer:
Agata [3.3K]3 years ago
8 0

Answer:

x greater than or equal to 12cm^2

Step-by-step explanation:

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Answer: \pm0.1706

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of \alpha:0.05 : z_{\alpha/2}= 1.96

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Standard deviation : \sigma= 0.5

We assume that this is a normal distribution.

Margin of error : E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

i.e. E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706

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3 years ago
Determine m∠1 in the triangle. 1.
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Answer:

what is the question

Step-by-step explanation:

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3 years ago
Hey um... I have a question about Cumulative frequency diagram. Its in the picture. Please help I will give you reward I promise
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Answer: see below

Step-by-step explanation:

(i)

200/2 = 100

Find 100 on cumulative frequency and the correspinding time: 14 minutes. So the answer is 14 minutes.

(ii)

First, find the lower quartile —> 200/4 = 50

Upper quartile —> 200/(3/4) = 150

Find the difference: 150 - 50 = 100

So the interquartile range is 100

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