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ki77a [65]
3 years ago
6

PLEASE HELP!!! (55 pts)

Mathematics
2 answers:
tia_tia [17]3 years ago
7 0

Answer:

D. 6.3 cm

Step-by-step explanation:

arc  length = r * theta

                theta must be in radians

  72 * pi/180  = 2/5 * pi


arc length = 5 * 2/5 * ip

arc length = 2 * pi

               = 6.283  cm

Sunny_sXe [5.5K]3 years ago
4 0

Answer:


D. 6.3 cm


......

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In a study of 799 randomly selected medical malpractice​ lawsuits, it was found that 499 of them were dropped or dismissed. Use
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Answer:

Claim is true that most medical malpractice lawsuits are dropped or dismissed.

Step-by-step explanation:

Given :In a study of 799 randomly selected medical malpractice​ lawsuits, it was found that 499 of them were dropped or dismissed.

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n =  799

x = 499

We will use one sample proportion test  

\widehat{p}=\frac{x}{n}\\\widehat{p}=\frac{499 }{ 799}\\\widehat{p}=0.6245

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Probability of dropped or dismissed is 1/2

 H_0:p=0.5\\H_a:p>0.5

Formula of test statistic = \frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

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α =0.05

So, p value < α

So, we reject the null hypothesis

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<span>
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