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givi [52]
2 years ago
14

Please help, been stuck on this for ages!

Mathematics
1 answer:
marishachu [46]2 years ago
8 0

Answer:

\boxed {192 cm^{2}}

Step-by-step explanation:

<u>Find the volume of separate cuboids</u> :

<u>Volume (top cuboid)</u> :

⇒ V = 2 x 6 x (10 - 2)

⇒ V = 12 x 8

⇒ V = 96 cm²

<u>Volume (lower cuboid)</u> :

⇒ V = 8 x 6 x 2

⇒ V = 48 x 2

⇒ V = 96 cm²

<u>Volume (prism)</u> :

⇒ 96 + 96

⇒ 192 cm²

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Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

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In the study 340 babies were​ born, and 289 of them were girls. This means that n = 340, \pi = \frac{289}{340} = 0.85

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The upper limit of this interval is:

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