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3 years ago

An investment of $250 pays 11% annual interest, compounded quarterly. What is the interest earned in 10 years?

Mathematics

2 answers:

Lady_Fox [76]3 years ago

5 0

$489.97 is the answer. 250*2.95987 = 739.9675-250= $489.97

lions [1.4K]3 years ago

4 0

<span>The interest earned in 10 years is B. $739.97.</span>

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Otrada [13]

Answer: (0.8115, 0.8645)

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Given: Sample size : n= 525

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Formula to find the confidence interval :

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$0.838\pm (1.645)\sqrt{\dfrac{0.838(1-0.838)}{525}}\\\\=0.838\pm (1.645)\sqrt{0.00025858285}\\\\=0.838\pm (1.645)(0.01608)\\\\= 0.838\pm0.0265\\\\=(0.838-0.0265,\ 0.838+0.0265)\\\\=(0.8115,\ 0.8645)$

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3 years ago