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Marysya12 [62]
3 years ago
6

What’s the missing length

Mathematics
1 answer:
mezya [45]3 years ago
7 0

Answer:

a=9in

Step-by-step explanation:

Pythagoreans Theorem

a^2+5.6^2=10.6^2

a^2+31.36=112.36

a^2=81

(take square root of both sides)

a=9

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Answer:

C.I =  0.7608   ≤ p ≤   0.8392

Step-by-step explanation:

Given that:

Let consider a  random sample n = 400 candidates where  320 residents indicated that they voted for Obama

probability \hat p = \dfrac{320}{400}

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The objective is to  develop a 95% confidence interval estimate for the proportion of all Boston residents who voted for Obama.

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=0.8  \pm 1.960 \sqrt{4 \times 10^{-4}}

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=0.8  \pm 0.0392

= 0.8 - 0.0392     OR   0.8 + 0.0392  

= 0.7608    OR    0.8392

Thus; C.I =  0.7608   ≤ p ≤   0.8392

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