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nika2105 [10]
3 years ago
5

Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function y= 4x^2 - 2

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:y

=

4

x

2

−

2

Step-by-step explanation:

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Construct a 99​% confidence interval to estimate the population proportion with a sample proportion equal to 0.36 and a sample s
vivado [14]

Using the z-distribution, the 99​% confidence interval to estimate the population proportion is: (0.2364, 0.4836).

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

A confidence interval of proportions is given by:

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

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 99% confidence level, hence\alpha = 0.99, z is the value of Z that has a p-value of \frac{1+0.99}{2} = 0.995, so the critical value is z = 2.575.

The estimate and the sample size are given by:

\pi = 0.36, n = 100.

Then the bounds of the interval are:

  • \pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 - 2.575\sqrt{\frac{0.36(0.64)}{100}} = 0.2364
  • \pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 + 2.575\sqrt{\frac{0.36(0.64)}{100}} = 0.4836

The 99​% confidence interval to estimate the population proportion is: (0.2364, 0.4836).

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

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8 0
2 years ago
I need help ! <br> <img src="https://tex.z-dn.net/?f=3%5Csqrt%7B5%7D%20%2B5%5Csqrt%7B15%7D" id="TexFormula1" title="3\sqrt{5} +5
Feliz [49]

Answer:

26

Step-by-step explanation:

SORRY IF IM WRONG

6 0
2 years ago
100 points and brainliest
Black_prince [1.1K]

Answer: The answer is D

Step-by-step explanation: Hope this helps

6 0
3 years ago
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Where can the perpendicular bisectors of an acute triangle intersect
ololo11 [35]
I think inside the triangle......
4 0
3 years ago
Brian pays £180 per week in rent. His landlord decides to decrease the rent by 5%. How much rent does he pay now
ira [324]

Answer:

171

Step-by-step explanation:

180 - (5% × 180)

180 - 5% × 180

(1 - 5%) × 180

(100% - 5%) × 180

95% × 180

95 ÷ 100 × 180

95 × 180 ÷ 100

17,100 ÷ 100 = 171.

5 0
3 years ago
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