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jok3333 [9.3K]
2 years ago
4

Sam tested every 50th candy bar from the assembly line to make sure there were enough peanuts in each bar. He found 15% did not

have enough peanuts. Which type of sampling did he use?
Mathematics
1 answer:
trasher [3.6K]2 years ago
4 0

Answer: Sam used systematic random sampling .

Step-by-step explanation:

  • A systematic random sampling is a kind of random sampling technique in which a sample is drawn from a large population such that their participants selected according to a random initial point but a fixed periodic interval.

Here , Sam tested every 50th candy bar from the assembly line to make sure there were enough peanuts in each bar.

i.e. the period of selecting candy bars is fixed as 50.

By definition of systematic random sampling  , we can cay that Sam used systematic random sampling .

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Which statements are true about the graph of y ≤ 3x + 1 and y ≥ –x + 2? Check all that apply. 1.The slope of one boundary line i
zloy xaker [14]

Answer:

2.Both boundary lines are solid.

3.A solution to the system is (1, 3)

5.The boundary lines intersect.

Step-by-step explanation:

we have

y\leq 3x+1 ----> inequality A

The solution of the inequality A is the shaded area below the solid line y=3x+1

The slope of the solid line is 3

The point (1,3) is  a solution of inequality A (lie in the shaded area of the solution set)

y\geq -x+2 ----> inequality B

The solution of the inequality B is the shaded area above the solid line y=-x+2

The slope of the solid line is -1

The point (1,3) is a solution of inequality B (lie in the shaded area of the solution set)

The solution of the system of inequalities is the shaded area between the two solids lines

see the attached figure

<u><em>Verify each statement</em></u>

1.The slope of one boundary line is 2

The statement is False

2.Both boundary lines are solid.

The statement is True

3.A solution to the system is (1, 3)

The statement is True

4.Both inequalities are shaded below the boundary lines

The statement is False

5.The boundary lines intersect.

The statement is True

The intersection point is (0.25,1.75)

see the attached figure

7 0
2 years ago
Read 2 more answers
jeffrey purchased a card for $180 that gives him 20 visits to a new gym and includes a one-time fee for unlimited use of the sau
yawa3891 [41]

There is many ways to do this but i did it this way.

180-123.75= 56.25

56.25/5=11.25

=11.25

7 0
2 years ago
Read 2 more answers
Which composition of transformations maps figure RSTUV to figure R"S"T"U"V"?
Sergeu [11.5K]

Answer:

option: B is correct

A reflection across line n followed by a 270° rotation about point P.

Step-by-step explanation:

Clearly from the figure we could see that the graph is first reflected across the given line n such that we obtain the figure R'S'T'V'U' and then it is rotated 270° across the point P so that we obtain the figure R"S"T"U"V".

Hence, option B is correct.

( A reflection across line n followed by a 270° rotation about point P )

5 0
2 years ago
Read 2 more answers
The table below shows how much Joe earns, y, after working x hours.
allochka39001 [22]
Both slopes have the same value which is 7.5.

To compute for the slope we will use this formula:
   m = y^2 - y^1 over x^2 - x^1

For the first slope, the points are<span> (4, 30) and (12, 90). Substitute and simplify.
   m = (90 - 30) over (12 - 4)
   m = 7.5

For the second slope, the points are </span><span>(4, 30) and (10, 75). Same with the above computation.
   m = (75 - 30) over (10 - 4)
   m = 7.5

Since the relationship is linear, the slope does not change. </span>
6 0
2 years ago
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Caleb's car used 8 gallons to travel 144 miles. How far can he travel on 20 gallons
V125BC [204]

Answer:

He will travel 360 miles.

Step-by-step explanation:

Divide 144 by 8. Then multiply your answer by 20.

7 0
2 years ago
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