Answer:
8 meters per second or 8/1
Step-by-step explanation:
Divide 400 meters by 50
8
So it is 8 meters per second
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The answer is c
Explanation Ik it
A) Has two horizontal asymptotes. One at y = −1 and one at y = <span>1
B) </span><span>B has a asymptote at y = 0</span><span>
</span><span>
C) </span> Does have two horizontal asymptotes. One at y = 1 and y = −1
Answer:
The 95% confidence interval for the population proportion of adults in the country who believe that televisions are a luxury they could do without is (0.500, 0.562).
Step-by-step explanation:
The complete question is:
A random sample of 1014 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1014 adults surveyed, 538 indicated that televisions are a luxury they could do without.Construct and interpret a 95% confidence interval for the population proportion of adults in the country who believe that televisions are a luxury they could do without.
Solution:
In a sample of 1014 adults, 538 indicated that televisions are a luxury they could do without.
Compute the sample proportion of adults who indicated that televisions are a luxury they could do without as follows:
![\hat p=\frac{538}{1014}=0.531](https://tex.z-dn.net/?f=%5Chat%20p%3D%5Cfrac%7B538%7D%7B1014%7D%3D0.531)
The (1 - <em>α</em>)% confidence interval for population proportion is:
![CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}](https://tex.z-dn.net/?f=CI%3D%5Chat%20p%5Cpm%20z_%7B%5Calpha%2F2%7D%5Csqrt%7B%5Cfrac%7B%5Chat%20p%281-%5Chat%20p%29%7D%7Bn%7D%7D)
The critical value of <em>z</em> for 95% confidence interval is:
![z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96](https://tex.z-dn.net/?f=z_%7B%5Calpha%2F2%7D%3Dz_%7B0.05%2F2%7D%3Dz_%7B0.025%7D%3D1.96)
*use a <em>z</em>-table.
Compute the 95% confidence interval for the population proportion of adults in the country who believe that televisions are a luxury they could do without as follows:
![CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}](https://tex.z-dn.net/?f=CI%3D%5Chat%20p%5Cpm%20z_%7B%5Calpha%2F2%7D%5Csqrt%7B%5Cfrac%7B%5Chat%20p%281-%5Chat%20p%29%7D%7Bn%7D%7D)
![=0.531\pm 1.96\times \sqrt{\frac{0.531(1-0.531}{1014}}}\\=0.531\pm 0.0307\\=(0.5003, 0.5617)\\\approx (0.500, 0.562)](https://tex.z-dn.net/?f=%3D0.531%5Cpm%201.96%5Ctimes%20%5Csqrt%7B%5Cfrac%7B0.531%281-0.531%7D%7B1014%7D%7D%7D%5C%5C%3D0.531%5Cpm%200.0307%5C%5C%3D%280.5003%2C%200.5617%29%5C%5C%5Capprox%20%280.500%2C%200.562%29)
Thus, the 95% confidence interval for the population proportion of adults in the country who believe that televisions are a luxury they could do without is (0.500, 0.562).
The answer is C
9 to 7 because a,b,d is equal to 7/9 but not c which is equal to 9/7