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aalyn [17]
3 years ago
6

How do you find a common denominator?​

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0
You can just use the app SnapCalc it answers anything for free
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An article regarding interracial dating and marriage recently appeared in the Washington Post. Of the 1,709 randomly selected ad
VMariaS [17]

Answer:

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

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}.

For this problem, we have that:

323 blacks, 86% of blacks said that they would welcome a white person into their families. This means that n = 323, p = 0.86

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 - 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8222

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 + 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8978

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

5 0
3 years ago
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Step2247 [10]

Answer:

c: car b was 10 miles east of car a

Step-by-step explanation:

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3 years ago
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Simplyfi. (9g^10p^8)^2<br> im confused pls help
andreev551 [17]

So the right answer is 9g^20p^16

look at the attached picture

Hope it will help you

Good luck on your assignment

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The function f(a) 260 - 55x represents the distance, in miles, remaining on a trip x hours
belka [17]

Answer:

260 - 55(3)

55(3)

260 - 165

= 95

Step-by-step explanation:

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Here are the scores of 16 students on an algebra test. 63, 64, 68, 71, 72, 73, 74, 75, 75, 85, 86, 87, 90, 91, 92, 93 Notice tha
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here you go, I think this is right

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3 years ago
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