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dangina [55]
3 years ago
8

Elliot borrowed $3800 from the bank for 3 years at a 4.25% simple interest rate?

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
3 0

$161.50

Step-by-step explanation:

4.25% of $3800 is $161.50

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Using the z-distribution, as we are working with a proportion, it is found that 1016 constituents are required.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

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In which:

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The margin of error is given by:

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In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

The estimate is of \pi = 0.61, while the margin of error is of M = 0.03, hence solving for n we find the minimum sample size.

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0.03\sqrt{n} = 1.96\sqrt{0.61(0.39)}

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More can be learned about the z-distribution at brainly.com/question/25890103

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