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Mamont248 [21]
3 years ago
10

Katrina buys a ​40-ft roll of fencing to make a rectangular play area for her dogs. Use ​2(​l+w)=40 to write a function for the​

length, given the width. Graph the function. What is a reasonable domain for the​ situation? Explain.
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
8 0
Why you write hi this needs to anser!!
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Answer:

a) (0.576, 0.624)

Step-by-step explanation:

Given that the sample proportion (p) = 60% = 0.6, sample size (n) = 900, confidence (C) = 85%

α = 1 - C = 1 - 0.85 = 0.15

α/2 = 0.075

The z score of α/2 (0.075) corresponds with the z score of 0.425 (0.5 - 0.075) which is equals to 1.44, hence z_\frac{\alpha }{2} =1.44

The margin of error (E) is:

E=z_\frac{\alpha }{2} *\sqrt{\frac{p(1-p)}{n} } =1.44*\sqrt{\frac{0.6(1-0.6)}{900} } = 0.024

The confidence interval = p ± E = 0.6 ± 0.024 = (0.576, 0.624)

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The equation is: X+14=17
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