Mathematics: In the figure below, AC is a diameter of circle P. the length of PC is 25 units. what is the exact length of arc BCA

We would need a sample of size at least 74.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.In whichz is the zscore that has a pvalue of .The margin of error is:99% confidence levelSo , z is the value of Z that has a pvalue of , so .How large of a sample size is needed to estimate it to within 0.15 of the true value with 99% confidence?We need a sample...

In the figure below, AC is a diameter of circle P.

Ответ:

savannah647

24.01.2022

Mathematics

$\frac{85}{2} \pi$

Step-by-step explanation:

Circumference is 50 because $2\pi (25)= 50\\$ . BCA= $2\pi -\frac{3}{10}\pi$ . Arc length over circumference = arc measure over radians in a circle. So arc length over $50\pi$ = $\frac{\frac{17}{10}\pi }{2\pi }$ . Arc length = $\frac{17}{10}\pi *\frac{50\pi }{2\pi }$ . Which then equals $\frac{85}{2} \pi$ .

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Ответ:

lexibyrd120

21.03.2022

Mathematics

We would need a sample of size at least 74.

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.