What angle would you need on a pie graph for a section that represented 25% of the

Mathematics

1 answer:

stich3 [128]3 years ago

6 0

Answer: C

Step-by-step explanation:

Use proportion:

360:100=x=25

100x=25*360

x=360/4

x=90

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Answer:

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Step-by-step explanation:

Information given

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$n= 250$ represent the sample size

$\hat p =\frac{48}{250}= 0.192$ represent the proportion of people who rent their home

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by: