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2 years ago

Find a data set on the internet. some suggested search terms: free data sets, medical data sets, education data sets.

Mathematics

1 answer:

sertanlavr [38]2 years ago

8 0

The data used consists Standing/Walking time (minutes per day) spent by two types of people (Lean and Obese).

<h3>How to illustrate the data?</h3>

The claim is that lean people spend more time walking and standing than obese people. We will be using right-tailed test.

The steps include:

Collect a sample of both groups
Calculate the mean and standard deviation of the two groups
State the null and alternate hypothesis and alpha.
Calculate Test Statistic
Make a conclusion based on our test.

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Simlify with step by step

ad-work [718]

Answer:

Here is your answer

Step-by-step explanation:

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3 years ago

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If you have $20,000 in assets and $50,000 in liabilities, what is your net worth?

Irina-Kira [14]

Answer is 30,000 ......................................

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3 years ago

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Last Thursday was costume day at Wayne's school. 20 out of the 100 students at the school wore a costume. What percentage of the

Paraphin [41]

Answer:

20 percent or 2/10

Step-by-step explanation:

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8 0

3 years ago

Geometry :))), please help me

amm1812

Answer:

x = -5

Step-by-step explanation:

Since these two triangles are similar, the ratio between the corresponding lengths of each triangle will be the same.

This means the ratio between one side of each triangle (e.g. AD and DC) will be the same as the ratio between a different side of each triangle (e.g. BE and BC).

So, to create an equation for the sides which contain the unknown 'x', we must first find the ratio between the two sides by using a different set of sides.

On the right side we are given 9 for AD, and 18 for DC.

9/18 = 0.5

This means that the extra length of the larger triangle from the smaller one (AD) is half the length of the smaller triangle (DC). We can use this to make an equation for x:

If AD/DC = 0.5, then BE/EC will also = 0.5

BE = x+23

EC = x+41

Therefore:

$\frac{x+23}{x+41} = 0.5$

Now we can solve by multiplying both sides by x+41 to eliminate the fraction:

$x+23=0.5(x+41)$

Now we multiply out the brackets and move the terms to different sides:

$x+23=0.5x+20.5$

$0.5x = -2.5$

$x = -5$

And if we substitute the -5 into the equations:

-5+23 = 18

-5 + 41 = 36

We will see that -5 does indeed give us the same ratio between the lengths:

18/36 = 0.5

Hope this helped!

4 0

3 years ago

(x+7)/(x^2-49) find the domain. show work

harina [27]

$\large\begin{array}{l} \textsf{Find the domain of}\\\\ \mathsf{f(x)=\dfrac{x+7}{x^2-49}}\\\\ \mathsf{f(x)=\dfrac{x+7}{x^2-7^2}}\\\\\\ \textsf{Factor out the denominator using special products:}\\\\ \textsf{(a difference of squares)}\\\\ \mathsf{f(x)=\dfrac{x+7}{(x+7)(x-7)}} \end{array}$

$\large\begin{array}{l} \textsf{Restrictions for the domain:}\\\\ \bullet~~\textsf{Denominators must not be zero:}\\\\ \mathsf{(x+7)(x-7)\ne 0}\\\\ \begin{array}{rcl} \mathsf{x+7\ne 0}&~\textsf{ and }~&\mathsf{x-7\ne 0}\\\\ \mathsf{x\ne -7}&~\textsf{ and }~&\mathsf{x\ne 7} \end{array} \end{array}$

$\large\begin{array}{l} \textsf{Therefore, the domain of f is}\\\\ \mathsf{D_f=\{x\in\mathbb{R}:~~x\ne -7~~and~~x\ne 7\}}\\\\\\ \textsf{or using a more compact form}\\\\ \mathsf{D_f=\mathbb{R}\setminus\{-7,\,7\}}\\\\\\ \textsf{or using the interval notation}\\\\ \mathsf{D_f=\left]-\infty,\,-7\right[\,\cup\,\left]7,\,+\infty\right[.} \end{array}$

<span>If you're having problems understanding this answer, try seeing it through your browser: brainly.com/question/2155752

$\large\textsf{I hope it helps. :-)}$

Tags: <em>function domain real rational factorizing special product interval</em>

</span>

7 0

3 years ago