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mixer [17]
3 years ago
12

Write the fraction or mixed number as a percent. 21/25

Mathematics
2 answers:
Strike441 [17]3 years ago
8 0
21/25=21/25×100=84% is the answer
raketka [301]3 years ago
7 0
As a percent it is 84% because you divide the two.

Hope this helped :)
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Answer:

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In a random sample of students who took the SAT test, 427 had paid for coaching courses and the remaining 2733 had not. Calculat
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Answer:

The 95% confidence interval for the proportion of students who get coaching on the SAT is (0.1232, 0.147).

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

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This means that n = 427 + 2733 = 3160, \pi = \frac{427}{3160} = 0.1351

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

The lower limit of this interval is:

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The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1351 + 1.96\sqrt{\frac{0.1351*0.8649}{3160}} = 0.147

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3 years ago
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Answer:

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I think its 0.4 over 0.6
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3 years ago
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