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Ira Lisetskai [31]
3 years ago
15

NEED ANSWERS ASAP, 100 POINTS! There are twenty classes at each of two middle schools. The number of students in each class at e

ach school is shown in the dot plots below.
Number of Students in Each Class at Poplar Middle School




Number of Students in Each Class at Oak Middle School



Which statement correctly compares the mean number of students for the data in the plots?
There are about 2 more students in each class at Poplar Middle School than at Oak Middle School.
There are about 2 more students in each class at Oak Middle School than at Poplar Middle School.
There are about 5 more students in each class at Poplar Middle School than at Oak Middle School.
There are about 5 more students in each class at Oak Middle School than at Poplar Middle School
Mathematics
1 answer:
DiKsa [7]3 years ago
5 0

Note: You missed to add the dot plots chart. As I found the chart after a little research. Thus, I am attaching it and based on that dot plot chart I am solving the question which anyways would clear you concept.

Answer:

'There are about 2 more students in each class at Oak Middle School than at Poplar Middle School' is the correct statement.

Step-by-step explanation:

From the diagram, it is clear that

The data set containing Poplar Middle School:

20   20   20   21   21   21   21   21   22   22   22   22   22   22   22   23   23   23   23   24  

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

\mu = 435/20

  =\frac{87}{4}

   = 21.75

The data set containing Oak Middle School:

20   21   21   22   22   23   23   23   23   24   24   24   25   25   26   26   27   27   28   29  

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

\mu = 483/20

   =24.15

So, the difference in mean will be:

                                            24.15 - 21.75 = 2.4

Therefore, 'there are about 2 more students in each class at Oak Middle School than at Poplar Middle School' is the correct statement.

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Whats the distance between the points (2, 7) and (2, 15)
sveta [45]

Answer:

The distance between the points (2, 7) and (2, 15) is 8.

Step-by-step explanation:

<u>What is the Distance between Two Points?</u>

For any two points there is exactly one line segment connecting them. The distance between two points is the length of the line segment connecting them. Note that the distance between two points is always positive. Segments that have equal length are called congruent segments.

How to Solve:

Formula:
  • \sqrt{(x2-x1)^2+(y2-y1)^2}

Putting Values:

=\sqrt{(2-2)^2+(15-7)^2}

=\sqrt{(0)^2+(8)^2}

=\sqrt{0+64}

=\sqrt{64}

=8

7 0
2 years ago
Assured normally costs £42 if you receive a 15% discount how much change will you get from £50
vesna_86 [32]
5% of £42 = £2.10
10% of £42 = £4.20
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£42 - £6.30 = £35.70

£50 - £35.70 = £14.30

the answer is £14.30

6 0
3 years ago
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Evaluate the expression for a = 4 and b = 3.<br><br> A-81<br> B-24<br> C-36<br> D-144
Dimas [21]
Where the expression....
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3 years ago
I need the answer please
eduard

Answer:

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Step-by-step explanation:

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8 0
2 years ago
I am having trouble with this problem....
Alexeev081 [22]

There 2 angles are corresponding angles, in which the angle measurements would have the same degree.

Set the two angles equal to each other, and solve for x.

7x - 1 = 8x - 14

Isolate the x. Subtract 8x from both sides, and add 1 to both sides

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7x - 8x = -14 + 1

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(-x)/-1 = (-13)/-1

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x = 13

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