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andrew-mc [135]
3 years ago
14

Is 2/5 the same as 0.4?

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
8 0
Yes, because if you devide 2 by 5 it equals a decimal of .4
<em>~Hope this helped :)</em>
My name is Ann [436]3 years ago
5 0
Yes, because 2/5 equals to 0.40 and 0.4 can equal to 0.40. Hope this helps!
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The following data are from a completely randomized design.
taurus [48]
Sorry I need the 2 answers to ask my own. I wouldn’t of understood this wnywyas. Hopefully you find someone who can do it
5 0
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

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is of:

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

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment.

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}}

M = 1.96\sqrt{\frac{0.5618*0.4382}{2161}}

M = 0.0209

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

4 0
3 years ago
Write down the exact value of 3-2
Anvisha [2.4K]
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5 0
3 years ago
I’m not sure how to explain this problem but I can take another picture if it isn’t clear
rosijanka [135]

In order to determine the value of x, consider that one of the interior angles of the triangle is given by:

180 - (4x - 18)

= 180 - 4x + 18

= 198 - 4x

Next, consider that the sum of the interioir angles of a triangle is equal to 180:

(2x + 6) + 36 + (198 - 4x)

= 2x + 6 + 36 + 198 - 4x

= -2x + 240

this is equal to 180:

-2x + 240 = 180

-2x = 180 - 240

-2x = -60

x = 60/2

x = 30

Hence, the value of x is x = 30

5 0
9 months ago
Find a formula for the distance from the point​ P(x,y,z) to each of the following planes. a. Find the distance from​ P(x,y,z) to
BARSIC [14]

Answer:

Distance to the xy-plane = |z|

Distance to the yz-plane = |x|

Distance to the xz-plane = |y|

Step-by-step explanation:

The distance from P(x,y,z) to the xy-plane is by definition the magnitude of the vector that goes from the perpendicular projection of P over the xy-plane to the point P, which is exactly the magnitude of the vector (0,0,z) = |z| the absolute value of z

Similarly, the distance from P to the yz-plane is |x| and the distance from P to the xz-plane is |y|

Distance to the xy-plane = |z|

Distance to the yz-plane = |x|

Distance to the xz-plane = |y|

7 0
3 years ago
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