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DochEvi [55]
2 years ago
7

Fourteen runners in a marathon had these race times, in hours,

Mathematics
1 answer:
Ymorist [56]2 years ago
7 0

Answer:

Please find attached the histogram for the marathon runners

Step-by-step explanation:

The given data is presented as follows;

2.21

2.25

2.76

3.1

3.3

3.5

3.6

3.77

3.8

4.23

4.25

4.25

4.6

4.9

From the data, we have;

The frequency or number of runners that run between 0 and 1 hour = 0

The frequency or number of runners that run between 1 and 2 hours = 0

The frequency or number of runners that run between 2 and 3 hours = 3

The frequency or number of runners that run between 3 and 4 hours = 6

The frequency or number of runners that run between 4 and 5 hours = 5

With the above frequencies for the different data ranges, the histogram of the given data is then constructed as attached.

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A million years ago, an alien species built a vertical tower on a horizontal plane. When they returned they discovered that the
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Answer:

\theta=cos^{-1}(\frac{2}{3})

Step-by-step explanation:

We are given that measurements of three points on the ground gave coordinates of (0,0,0),(1,2,0) and (0,2,1)

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\times =\begin{vmatrix}i&j&k\\1&2&0\\0&2&1\end{vmatrix}

\times =2\hat{i}-\hat{j}+2\hat{k}

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Angle between two vectors formula

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Now, using this formula

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A superintendent of schools wonders if scores on a test of science achievement differ for female and male 8th grade students. To
lina2011 [118]

Answer:

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Step-by-step explanation:

For this case the intention is try to test if scores on a test of science achievement differ for female and male 8th grade students. let's analyze the possible options for this case:

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