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3 years ago

1496 mm2 to square centimetres.

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

8 0

Answer:

14.96 cm²

Step-by-step explanation:

1 cm = 10 mm

1 cm² = 10mm×10mm = 100 mm²

100mm² .................. 1 cm²

1496 mm² ............... x cm²

x = 1496*1/100 = 14.96 cm²

Kazeer [188]3 years ago

3 0

Answer:

14.96

Step-by-step explanation:

1496mm *mm = 1496 * 1/10 cm * 1/10cm =1496/100 cm2

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Answer:

The 99% confidence interval estimate of the percentage of girls born is (0.8, 0.9).

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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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For this problem, we have that:

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

Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.

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$\pi + z\sqrt{\frac{\pi(1-\pi)}{340}} = 0.85 + 2.575\sqrt{\frac{0.85*0.15}{400}} = 0.90$

The 99% confidence interval estimate of the percentage of girls born is (0.8, 0.9).

Does the method appear to be effective?

b)Yes, the proportion of girls is significantly different from 0.5.

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