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3 years ago

Describe it, and also is it a positive or negative association? show work I will give braknliest

Mathematics

1 answer:

STatiana [176]3 years ago

6 0

Answer:

The relationship between the data in the scatter plot is a positive or increasing trend.

Step-by-step explanation:

The points are going in an upwards direction. This upward direction is an increase, which means that this data is a positive trend.

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AARP reported on a study conducted to learn how long it takes individuals to prepare their federal income tax return (AARP Bulle

Crank

Answer:

Confidence interval: (30.1,36.9)

Step-by-step explanation:

We are given the following data set:

35.3,30.5,37.4,26.5,13.0,49.9,28.8,44.0,61.6,0.5,40.5,34.9,47.9,36.6,24.1,39.8,47.8,18.5,36.6,39.2,14.5,37.3,40.5,49.3,45.5,28.3,19.5,5.6,52.6,41.4,45.3,39.0,33.7,29.4,14.5,40.1,33.7,36.9,5.6,33.7

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1339.9}{40} = 33.5$

$S.D = 11$ (given)

n = 40

Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

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

$33.5 \pm 1.96(\frac{11}{\sqrt{40}} ) = 6.34 \pm 3.4 = (30.1,36.9)$

6 0

3 years ago

Rewrite, using the distributive property. 5(2x – 3y) = [?]* - [ ]y

olchik [2.2K]

Answer:

10x-15y

Step-by-step explanation:

So, when they say use the distrubutive property, they basically mean turning this:

a(b+c)

Into this:

ab+ac

So in this case, it would be:

5(2x-3y)

And we will turn it into:

10x-15y

ANother way to think about it is we are multiplying 2x by 5, and -3y by 5. So:

2x*5

10x

And

-3y*5

-15y

Then we can combine these two:

10x-15y

Hope this helps!

7 0

3 years ago

What is the rule used to transform ABC to its image

Karo-lina-s [1.5K]

Answer:

we don't see an image?

Step-by-step explanation:

8 0

3 years ago

If f(x) = |x| + 9 and g(x) = –6, which describes the value of (f + g)(x)?

tangare [24]

(f+g)(x) ≥ 3 for all values of x

6 0

4 years ago

Read 2 more answers

In circle M, name a chord that lies on a secant.

Zepler [3.9K]

C. Segment EB is a chord that lies on a secant because the line segment's endpoints are on the circle.

5 0

3 years ago

Read 2 more answers

Describe it, and also is it a positive or negative association? show work I will give braknliest​

Describe it, and also is it a positive or negative association? show work I will give braknliest