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Sergeu [11.5K]
3 years ago
15

A women invest 806.68in a saving account that pays 5.25% annually how much is in the account at the end of the year

Mathematics
1 answer:
Brut [27]3 years ago
3 0
Simple interest= prt
=806.68 (.0525)(1)
=42.35

Balance=investment + interest earned
806.68+42.35=$849.03
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At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population pro
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Answer:

A sample of 1068 is needed.

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}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population proportion?

We need a sample of n.

n is found when M = 0.03.

We have no prior estimate of \pi, so we use the worst case scenario, which is \pi = 0.5

Then

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.03 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.03\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.03}

(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.03})^{2}

n = 1067.11

Rounding up

A sample of 1068 is needed.

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natali 33 [55]

Answer:

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Step-by-step explanation:

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A pharmacist is trying to determine which of the form is most expensive. These tablets form comes in 50 mg tablets and these tablet cost is 75.00 for 100 tablets. Capsule comes in 75 mg capsule and cost is 63. 75 for bottle of 85 capsules caplet comes in 100 mg.and 40 caplets are cost of $ 70.00.

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Answer:

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4 0
2 years ago
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Merv’s Magic Shop has $56,000.00 in assets and $14,000.00 in liabilities. Merv’s current financial ratio is
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