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Mandarinka [93]
3 years ago
7

The standard deviation of the distribution of sample means is​ _______.

Mathematics
1 answer:
luda_lava [24]3 years ago
6 0

Answer:

Standard error

Step-by-step explanation:

The standard deviation of the distribution of sample means is called the standard error of the means.

It is denoted by: \sigma_{\bar X}

The standard error is calculated using the formula: \sigma_{\bar X}=\frac{\sigma}{\sqrt{n} }

where n is the sample size and \sigma is the population standard deviation.

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Please help with this
satela [25.4K]

Answer:

I believe the answer is 324cm³

just do length x width x height divided by 2

9 x 6 x 12= 648

648÷2=324

I hope this helps dude :)

4 0
3 years ago
The answer to a system is a(n)<br> A) point<br> B) line<br> C) two points<br> D) equation
love history [14]
I think the answer is D ?
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3 years ago
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When using "mean" does it mean average of something if not please explain, I'm a bit confused.
lesya [120]
Mean the the total of all values, divided by the number of values
5 0
3 years ago
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reflection symmetry is the quality a design has if it maintains all characteristics when it is rotated about an axis lying in it
OlgaM077 [116]

Answer:

True if reflection over a line.

Step-by-step explanation:

Given that there is a reflection symmetry. We have to discuss about the quality of the design.

By reflection , we mean it can be either on a line or on a point.

If symmetry is on a line, then we get a mirror image of the original one keeping the line of symmetry as mirror.  Hence in this case when rotated about axis of symmetry lying it its plane the original design would be maintained.

Examples are : Circles, ellipses, hyperbolas, etc.

Reflection about a point is obtained by keeping equal distance form the point.

For example, reflection of (1,1) over origin would be (-1,-1)

Here the rotation quality may not apply

8 0
3 years ago
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The students in a class were asked how many siblings they have. The data obtained is represented in the dot plot. The number of
Grace [21]

Answer:

0 Siblings: 4 Students

3 or more siblings: 5 students

Step-by-step explanation:

The numbers at the bottom represents how many siblings they have and the dots represent the number of studens so using this we know:

0 Siblings: 4 Students

1 Sibling: 3 Students

2 Siblings: 3 Students

3 Siblings: 1 Student

4 Siblings: 0 Students

5 Siblings: 2 Students

6 Siblings: 1 Student

7 Siblings: 1 Student

3 or more: 1 + 0 + 2 + 1 + 1 = 5

3 or more siblings: 5 students

5 0
3 years ago
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