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Likurg_2 [28]
3 years ago
11

2/3x- 1/5 is greater than 1

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
8 0

Answer:

<h2>x > 1.8</h2>

Step-by-step explanation:

\dfrac{2}{3}x-\dfrac{1}{5}>1\qquad\text{multiply both sides by 15}\\\\15\!\!\!\!\!\diagup^5\cdot\dfrac{2}{3\!\!\!\!\diagup_1}x-15\!\!\!\!\!\diagup^3\cdot\dfrac{1}{5\!\!\!\!\diagup_1}>15\cdot1\\\\(5)(2x)-3>15\qquad\text{add 3 to both sides}\\\\10x>18\qquad\text{divide both sides by 10}\\\\\boxed{x>1.8}

lora16 [44]3 years ago
5 0

Answer:

X > 9/5

Step-by-step explanation:

Just did it

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Answer:

a. The 99% confidence interval for the population proportion is (0.7872, 0.8610).

D. Yes, we can conclude that the population proportion exceeds 75% because 75% is below the lowest believable value of the confidence interval.

b. The 99% confidence interval would be wider than a 95% confidence interval.

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We have to calculate a 99% confidence interval for the proportion.

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MOE=z\cdot \sigma_p=2.5758 \cdot 0.0143=0.0369

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The 99% confidence interval for the population proportion is (0.7872, 0.8610).

We can conclude that there is, at least, 99% chances that the true proportion is higher than 0.7872. So there is at least 99% chances that the population proportion is higher than 0.75.

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