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3 years ago

Determine how much simple interest you would earn on the following investment:

Mathematics

1 answer:

motikmotik3 years ago

8 0

Answer: $3,484 (I hope this is the correct way to do it)

Step-by-step explanation:

The formula is: $SI=\frac{PRT}{100}$

SI = simple interest
P = principal amount = $13,400
R = interest rate (in percentage) = $6\frac{1}{2}$ % = 6.5%
T = time duration (in years) = 4 years

$SI=\frac{13400*6.5*4}{100} =\frac{13400*26}{100} =\frac{348400}{100} =3484$

If you want to find the total amount, add the principle amount and the interest.

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Step-by-step explanation:

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In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat

Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

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For this problem, we have that:

$n = 1004, \pi = 0.53$

99% confidence level

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The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706$

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3 years ago

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mariarad [96]

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answer: The student flipped the y values

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