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tekilochka [14]
2 years ago
10

A cylinder has a height of 4 meters and a diameter that is 3 times the measure of the

Mathematics
1 answer:
Andrei [34K]2 years ago
3 0

Answer:

452.16 m³

Step-by-step explanation:

d = 3h = 3×4m = 12 m

r = d/2 = 12m/2 = 6 m

V = Ab×h = π·r²·h

= 3.14×36m²×4m

= 452.16 m³

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Find the equation of the circle with center at the origin and x-intercepts 12 and -12
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3 years ago
In a clinical test with 2161 subjects, 1214 showed improvement from the treatment. Find the margin of error for the 95% confiden
Vlad [161]

Answer:

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

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

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The margin of error is of:

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

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This means that n = 2161, \pi = \frac{1214}{2161} = 0.5618

95% confidence level

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

Margin of error:

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

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The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

4 0
3 years ago
5.349 round to the nearest tenth
soldi70 [24.7K]
5.4 because the 9 bumps it to 5.35.

And the 5 bumps it to 5.4.                                                                                                    
6 0
2 years ago
Read 2 more answers
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