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kupik [55]
3 years ago
15

(8.02 LC)

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

First we graph the given points and join them to form lines A,B,C,D as described in the question. Now we can easily check point (-4,1) lies on which line.

From graph we see that test point (-4,1) lies only on lines A and C.

Hence equatin of lines A and C will be final answer.

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WILL AWARD BRAINLIEST AND 30 PTS IF THERE IS A GOOD EXPLANATION. ANSWER IS NOT 243. question: In how many ways can we put five i
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aliya0001 [1]
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3 0
4 years ago
A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop
Katyanochek1 [597]

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\hat{p}\pmz_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.42\pm(2.576)\sqrt{\dfrac{0.42(1-0.42)}{85}}\\\\\approx0.42\pm0.053\\\\=(0.42-0.053,\ 0.42+0.053)=(0.367,\ 0.473)

Hence, the  99% confidence interval estimate of the true proportion of families who own at least one DVD player is  (0.367,\ 0.473)

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