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Andrew [12]
3 years ago
11

Which box-and-whisker plot shows the scores of ten students on a mathematics exam?89, 78, 93, 90, 75, 81, 91, 80, 89, 79

Mathematics
1 answer:
Rzqust [24]3 years ago
7 0

Answer:

A box-and-whisker plot is shown above a number line that extends from 70 to 100 with 1 unit markings. The box extends from 79 to between 90 and 91 with a division at 89. There is also a point marked at 89. The whisker on the left extends from 75 to 79. The whisker on the right extends from between 90 and 91 to 93.

i hope this helps u and makes sense :))

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Evaluate the expression 3+ [5(2-3) - 6] ​
iragen [17]

Answer:

<em><u>Answer is below</u></em>

Step-by-step explanation:

<u><em>3+5(2−3)−6</em></u>

<u><em>=3+(5)(−1)−6</em></u>

<u><em>=3+−5−6</em></u>

<u><em>=3+−11</em></u>

<u><em>=−8</em></u>

<u><em>So therefore, your answer would be -8</em></u>

8 0
3 years ago
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Determine the mean absolute deviation of the data.9, 7, 11, 10, 8
Darya [45]

Answer:

mean=average which means you add all of the numbers and divide by the number of numbers there are, which sounds pretty confusing, but i'll show you! 9+7+11+10+8=45, now you divide 45 by 5, which is how many numbers there are that we had to add. 45 divided by 5 is 9, which means the MEAN/average is 9!

Step-by-step explanation:

hope this helps!

5 0
3 years ago
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

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Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

6 0
3 years ago
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DIA [1.3K]
<span>C) 1/30 i think ok i am 12</span>
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What is x in 5x +(3-1)=12
olga2289 [7]

Answer:

x=2

Step-by-step explanation:

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x =10÷5

x =2

5 0
2 years ago
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