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Schach [20]
3 years ago
7

The student government at the local middle school surveyed students to help plan the end-of-year party. For the first sample, th

ey surveyed every other person at sports practice after school. For the second sample, they surveyed every fifth person entering the cafeteria where all students eat. Which statement about the samples is true?
Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0

Answer:

Explained below.

Step-by-step explanation:

Convenience sampling is a kind of non-probability-sampling (i.e. all items doesn’t have an equivalent chance of being selected), which doesn’t comprises of random collection of items. Convenience sampling is where we take in items which are easy to reach.  This sort of sampling technique results in a biased sample.

Systematic sampling is a kind of probability sampling method in which individuals from a larger population are nominated according to a random initial point and a static, periodic interval. If the individual <em>k</em> is selected as the first sample then the sample space consists of every <em>k</em>th individual.

In this case the first sample is an example of convenience sample and the second is a systematic sample.

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If they are going 12 miles per 1/3 hour . What is the average speed per hour in miles
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Answer:

12 miles per (1/3) hour equals

36 miles per hour

Step-by-step explanation:

3 0
2 years ago
Which statement follows from the given theorem? Theorem: The diagonal of a parallelogram divides it into two congruent triangles
777dan777 [17]

Answer with explanation:

Theorem : The diagonal of a parallelogram divides it into two congruent triangles.

Properties of parallelogram

1. Opposite sides are equal and parallel.

2. Diagonal bisect each other.

3. Opposite Angles are equal.

If you will look at the first three options

A:  Diagonals of a parallelogram bisect opposite angles.→→False(Alternate angles are equal)

B: Consecutive sides of a parallelogram are congruent.→→→False(Opposite sides are congruent)

C: Consecutive angles of a parallelogram are congruent.→→→False(Opposite angles are congruent)

D: Consecutive angles of a parallelogram are supplementary.→→→→True

For,any parallelogram, having vertices , A, B and C and D

Opposite sides are parallel, so

1.∠A + ∠B=180°

2.∠C + ∠B=180°

3.∠C+ ∠D=180°

4. ∠A + ∠D=180°

Option D

6 0
3 years ago
If the , points on the graphs are (-4,1) and (2,1) what is the equation ?
balandron [24]

Slope-intercept form:

y = mx + b

"m" is the slope, "b" is the y-intercept


To find "m", you can use the slope formula and plug in the two points:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m=\frac{1-1}{2-(-4)}

m=\frac{1-1}{2+4}

m=\frac{0}{6}=0


The slope is 0 so:

y = mx + b

y = 0x + b     [any number multiplied by 0 is 0]

y = b      

To find "b", you plug in either of the points into the equation (since both of their y values are 1]

y = b

1 = b


Your equation is:

y = 1      (This is a horizontal line)

8 0
2 years ago
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What are the first five terms of the pattern with formula 3n + 4?
Leviafan [203]
In this equation we start by filling in the N with "1" then"2" then "3" and so on

3n+4=
3(1)+4=7
3(2)+4=10
3(3)+4=13
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4 0
2 years ago
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If the diameter of a circle is 124 centimeters, then what is the radius.
zhenek [66]

Answer:

radius = 62 cm

Step-by-step explanation:

radius = diameter/2

radius = 124/2 = 62 cm

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3 years ago
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