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Marta_Voda [28]
2 years ago
6

given that the measurement is in centimeters, find the circumference of the circle to the nearest tenth. (use 3.14 for pi)

Mathematics
2 answers:
Anna11 [10]2 years ago
5 0
Answer: 5

Explanation: C = 2 • 3.14(pi) • 5(r). Use calculator like me :D
Jlenok [28]2 years ago
3 0

Answer:

b

Step-by-step explanation:

circumference =2×pi×r=5×2×3.14=31.4

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3 years ago
1.08 x 10^-3 in standard form?
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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

#SPJ1

8 0
2 years ago
What is the value of x<br> (2x+6)=32
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Answer:

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3 years ago
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we must be doing the same problems

Step-by-step explanation:

I need help on them as well

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