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3 years ago

(3n-1)+(4-n) please answer my question!!!!!

Mathematics

1 answer:

prisoha [69]3 years ago

7 0

Collect the like terms
So 3n-n=2n and -1+4=3
(3n-1)+(4-n)=2n+3

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Answer:

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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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3 years ago

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Answer:

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