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GarryVolchara [31]
3 years ago
14

Which choice best describes a simple random sample?

Mathematics
1 answer:
Dimas [21]3 years ago
7 0

Answer:

a. a selection of members from a population in such a way that every possible sample of the same size has an equal chance of being chosen.

Step-by-step explanation:

In the process of simple random sampling, a subset of the population is directly randomly chosen from the whole population, without dividing the population in groups (like in cluster sampling), without taking proximity into account (like in convenience sampling) or using set intervals (like in stratified sampling). In simple random sampling, every possible subset of the same size has the same probability of being selected.

Therefore, the statement that better fits this description is alternative a.

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Pls help i don’t understand chemistry <br><br><br> Also do a step by step thing so I understand it
Svetach [21]

Answer:

CHEMISTRY IS THE BRANCH OF SCIENCE THAT DEALS WITH THE COMPOSITION,PROPERTIES,STRUCTURES AND CHANGES IN MATTER

7 0
3 years ago
-3(1-2x)=3x+3(x-3)+6
deff fn [24]

Let's solve this problem step-by-step.

−3(1−2x)=3x+3(x−3)+6

Step 1: Simplify both sides of the equation.

−3(1−2x)=3x+3(x−3)+6

(−3)(1)+(−3)(−2x)=3x+(3)(x)+(3)(−3)+6(Distribute)

−3+6x=3x+3x+−9+6

6x−3=(3x+3x)+(−9+6)(Combine Like Terms)

6x−3=6x+−3

6x−3=6x−3

Step 2: Subtract 6x from both sides.

6x−3−6x=6x−3−6x

−3=−3

Step 3: Add 3 to both sides.

−3+3=−3+3

0=0

So, 0=0 or all real numbers.

6 0
3 years ago
Warren wants to build a rectangular enclosure for his animals. one side of the pen will be against the barn, so he needs no fenc
Lera25 [3.4K]
L +2w = 500
a = lw

a) l = 500 -2w
.. a = (500 -2w)*w


b) The zeros of the above equation are w=0, w=250. The vertex of this quadratic is on the line of symmetry, halftway between the zeros, at w=125 ft.


c) a = (500 -2*125)*125 = 31,250 . . . . square feet
7 0
3 years ago
Heidi earns $11.50 per hour plus a bonus of $105 for the week. Her goal is to earn $650 for the week. Which equation
Stells [14]

Answer:

48 hours

Step-by-step explanation:

$650 - $105 = $545

$545 ÷ $11.50 = 47.39 = 48 hours (Rounded)

6 0
2 years ago
If you add the lengths of the focal radii of an ellipse, what other value will you produce?
ss7ja [257]

Equation of an ellipse

→having center (0,0) , vertex ((\pm a ,0) and covertex (\pm b ,0) and focus (\pm c ,0) is given by:

\frac{x^2}{a^2} + \frac{y^2}{b^2}=1

As definition of an ellipse is that locus of all the points in a plane such that it's  distance from two fixed points called focii  remains constant.

Consider two points (a,0) and (-a,0) on Horizontal axis of an ellipse:

Distance from (a,0) to (c,0) is = a-c = F_{1}

Distance from (-a,0) to (c,0) is = a + c = F_{2}

F_{1} + F_{2} = a -c + a +c

          = a + a

        = 2  a  →(Option A )


8 0
3 years ago
Read 2 more answers
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