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3 years ago

Angle A and angle B are supplementary angles. Which of the following relationships could also be true of angles A and B?

Mathematics

1 answer:

Sphinxa [80]3 years ago

5 0

D.) Linear angles is the best answer,
but A), C), and E) are still possible

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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the

Vesna [10]

Answer:

A sample size of at least 1,353,733 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , 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 .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

You would like to be 98% confident that you esimate is within 0.1% of the true population proportion. How large of a sample size is required?

We need a sample size of at least n.

n is found when M = 0.001.

Since we don't have an estimate for the proportion, we use the worst case scenario, that is $\pi = 0.5$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.001 = 2.327\sqrt{\frac{0.5*0.5}{n}}$

$0.001\sqrt{n} = 2.327*0.5$

$\sqrt{n} = \frac{2.327*0.5}{0.001}$

$(\sqrt{n})^{2} = (\frac{2.327*0.5}{0.001})^{2}$

$n = 1353732.25$

Rounding up

A sample size of at least 1,353,733 is required.

5 0

4 years ago

5 in

disa [49]

Answer:

I would say that C is the correct answer

7 0

3 years ago

In a school with only sixth and seventh-grade students, 2/5 of the 200 students are seventh graders

san4es73 [151]

To find how many sixth graders there are we need to find out how many students there are in 1/5 in the school. Divide 200 by 2 to find 1/5 of the school.
Since 3/5 of the school is 6th graders we multiply 100 by 3 to find that there are 300 students in the 6th grade.

7 0

3 years ago

Read 2 more answers

Felix has $11 and begins saving $5 each week toward buying a new phone. Eddy has $60 and begins spending $2 per week on supplies

DIA [1.3K]

Felix starts off with 11, so that's our constant.

Each week he saves $5 which is our slope.

Equation for Felix:

Y=5x+11

Eddy has $60 which is our constant

He saves $2 which is our slope

Equation for Eddy: