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Stells [14]
3 years ago
10

What is the result when the number 11 is increased by 8.8%?

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0

Answer:

11.968

Step-by-step explanation:

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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the
Vesna [10]

Answer:

A sample size of at least 1,353,733 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , 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 .

The margin of error is:

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

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.  

You would like to be 98% confident that you esimate is within 0.1% of the true population proportion. How large of a sample size is required?

We need a sample size of at least n.

n is found when M = 0.001.

Since we don't have an estimate for the proportion, we use the worst case scenario, that is \pi = 0.5

So

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

0.001 = 2.327\sqrt{\frac{0.5*0.5}{n}}

0.001\sqrt{n} = 2.327*0.5

\sqrt{n} = \frac{2.327*0.5}{0.001}

(\sqrt{n})^{2} = (\frac{2.327*0.5}{0.001})^{2}

n = 1353732.25

Rounding up

A sample size of at least 1,353,733 is required.

5 0
3 years ago
What is the Y intercept of the fraction describing in the table?
Natasha2012 [34]

Answer:

Its 0

Step-by-step explanation:

6 0
2 years ago
A submarine sits at –300 meters in relation to sea level. Then it descends 115 meters. What is its new position in relation to s
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Answer:

-415 feet

Step-by-step explanation:

-300-115 = -415

7 0
3 years ago
Make x the subject of y = 4x + 1<br>You may use the flowchart to help you if you wish.<br>X<br>y​
Paha777 [63]

Step-by-step explanation:

y = 4x+1

y–1 = 4x

x = (y–1)/4

5 0
3 years ago
URGENT HELP NEEDED! Brainliest! Please only correct answers...
agasfer [191]
I think that the answer would be D
5 0
3 years ago
Read 2 more answers
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