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mixer [17]
4 years ago
6

Use the graph below to answer the following questions.​

Mathematics
1 answer:
Maru [420]4 years ago
3 0

Answer:

  • a) 3
  • b) x = {-3, -2, 2}

Step-by-step explanation:

Refer to attached for points

a) f(-1) = 3 as per graph

b) f(x) = 6

We add horizontal line through point y=6 to find intersections with the graph

Take x-values of those points. The points are x = -3, x = -2, x = 2

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A recent study asked U. S. Adults to name 10 historic events that occurred during their lifetime that have had the greatest impa
Nadusha1986 [10]

Using the z-distribution, as we are working with a proportion, it is found that the 99% confidence interval for the proportion of all U. S. Adults who would include the 9/11 attacks on their list of 10 historic events is (0.7458, 0.7942). It means that we are 99% sure that the true proportion for all U.S. adults is between these two bounds.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, the parameters are:

z = 2.575, n = 2000, \pi = 0.77

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 - 2.575\sqrt{\frac{0.77(0.23)}{2000}} = 0.7458

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 + 2.575\sqrt{\frac{0.77(0.23)}{2000}} = 0.7942

The 99% confidence interval for the proportion of all U. S. Adults who would include the 9/11 attacks on their list of 10 historic events is (0.7458, 0.7942). It means that we are 99% sure that the true proportion for all U.S. adults is between these two bounds.

More can be learned about the z-distribution at brainly.com/question/25890103

7 0
3 years ago
What is the slope of the line through (-9,6)(−6),9)
lara31 [8.8K]

Answer:

1

Step-by-step explanation:

Well slope intercept is y2-y1 over x2-x1

So,

-6-(-9) over 9-6

3 over 3 which is 1

Your slope is 1

6 0
3 years ago
Read 2 more answers
Which situation most directly illustrates a possible outcome of a fiscal policy?
SVETLANKA909090 [29]

Answer: B. The amount of federal money available to support education decreases.

Step-by-step explanation:

The Fiscal policy of a Government relates to the spending and taxation policies of that Government in an effort to control the direction of the Economy.

Normally there are two types of Fiscal Policy: Expansionary and Contractionary. Expansionary fiscal policy works by the Government increasing spending and/ or cutting taxes so that consumers in the economy have more money.

Contractionary policy is the opposite and involves Government spending reducing and/ or taxes increasing. Reducing the amount of Federal money available for education is a possible product of Contractionary fiscal policy.

5 0
3 years ago
Suppose x and y are sets such that XuB=(-8,-4,-2,0,2,4,6,8), XnY =(-2,0,2) and X/Y =(-8,8) on this basis which of the following
love history [14]

Answer:

I need points

Step-by-step explanation:

8 0
3 years ago
Change the equation to slope intercept form and identity the slope and y-intercept -8x+2y=6
gulaghasi [49]

The answer is:

y=4x+3

The slope is: 4

The y-intercept is: 3

The explanation is shown below:

1. The slope intercept form of the linear equation is:

y=mx+b

Where m is the slope and b is the y-intercept.

2. Therefore, you must solve for <em>y</em>, as following:

-8x+2y=6\\y=\frac{8x+6}{2}\\y=4x+3

m=4\\b=3

8 0
3 years ago
Read 2 more answers
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