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Mathematics

1 answer:

xxMikexx [17]3 years ago

8 0

⟘ = 90°

The intersect point is at the N not P, so the answer is m∠BNP = 90°

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$n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16$

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Step-by-step explanation:

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 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by: