2 years ago

93 is 50% of what number?

Mathematics

1 answer:

yKpoI14uk [10]2 years ago

6 0

Answer: the answer is 186

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Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

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Population standard deviation =

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Confidence interval:

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Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

$1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)$

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