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love history [14]
3 years ago
15

Answer this please! This is a lightshot/picture please answer and you shall be greeted with 10PTS!!

Mathematics
1 answer:
dangina [55]3 years ago
6 0
Area of big rectangle= 35x22=770
Area of little rectangle = 18x(44-35)=162
Area of triangle = 1/2 (44-35)x (22-18) = 18

Area of polygon= 770+162+18= 950m^2
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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.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

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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 lower limit of this interval is:

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