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skad [1K]
3 years ago
14

True or false: in building a confidence interval for a proportion you can cut the margin of error in half (from e to e/2 by doub

ling the sample size (from n to 2n.
Mathematics
1 answer:
pav-90 [236]3 years ago
3 0
I think this is false. p +/- z*sqrt (pq/n) . Notice that the formula has sqrt of n.


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The diagonal of the rectangle is 13 inches, and the side lengths of the triangles are Pythagorean triples. To the nearest tenth,
frosja888 [35]
1) A Pythagorean triples is a set of three integers, a, b, c,  that follow the rule a^2 + b^2 = c^2

2) Assumin c is the diagonal of your rectangle and the hypotenuse of the triangles, you are looking this:

13^2 = a^2 + b^2

=> 169 = a^2 + b^2

Two integer numbers that meet that equality are 5 and 12:

5^2 = 25
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=> 5^2 + 12^2 = 25 + 144 = 169

 => 13^2 = 5^2 + 12^2

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3 years ago
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Difference between reals and complex numbers?
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2 years ago
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