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guajiro [1.7K]
3 years ago
9

What is the area of the red? Use 3.14 for π.

Mathematics
1 answer:
grigory [225]3 years ago
8 0
Ask your teacher that’s all you have to do.
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In a poll of 2000 likely voters, 960 say that the US spends too little on fighting hunger at home. Find a 96% confidence interva
Bezzdna [24]

Answer:

a. 0.48

b. The 96% confidence interval for p is (0.457, 0.503).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

In a poll of 2000 likely voters, 960 say that the US spends too little on fighting hunger at home.

This means that n = 2000, \pi = \frac{960}{2000} = 0.48.

This is the answer for question a.

96% confidence level

So \alpha = 0.04, z is the value of Z that has a pvalue of 1 - \frac{0.04}{2} = 0.98, so Z = 2.056.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.48 - 2.056\sqrt{\frac{0.48*0.52}{2000}} = 0.457

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.48 + 2.056\sqrt{\frac{0.48*0.52}{2000}} = 0.503

The 96% confidence interval for p is (0.457, 0.503).

7 0
3 years ago
Ronald started solving the equation −2(2x−4)+3=6x+1.<br><br> Which is a correct next step?
Snowcat [4.5K]

Answer:

distribute bud

Step-by-step explanation:

distribute throught the parethesis first

8 0
3 years ago
Read 2 more answers
Graph the ordered pairs for each store on the same coordinate plane.
yaroslaw [1]
Do you have the coordinates. Or the ordered pairs?
4 0
4 years ago
What are the two constants of proportionality for the relationship between distance in kilometers
andrezito [222]
We call the ratio between two directly proportional quantities the constant of proportionality. When these two quantities may increase or decrease, the constant proportionality always remains the same
5 0
3 years ago
WILL MARK YOU BRAINLIEST HURRY PLZZZ!! I think its C but im not sure
Novosadov [1.4K]

Answer:

B

Step-by-step explanation:

You can rule out all others. A is wrong because a triangle cannot be acute and obtuse at the same time. C is wrong because a polygon dosen't neccassarily need to be a triangle, for example, a polygon is a closed shape, so it could be a rectangle. It isn't D because there are obtuse triangles out there. So, the only one left is B.

4 0
4 years ago
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