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Pavlova-9 [17]
2 years ago
13

Please help me im very depressed and im struggling a lot on my math and i really need some answers

Mathematics
2 answers:
expeople1 [14]2 years ago
4 0

pls dont cheat on quiz: ask for extra practice from teacher and ask questions if you don't get material

WITCHER [35]2 years ago
3 0

Answer:

B

Step-by-step explanation:

Negative numbers are always less than positive numbers. √11 will be positive and absolute value | | is how far the number is from 0, so it will be positive

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Using the z-distribution, as we have a proportion, the 95% confidence interval is (0.2316, 0.3112).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

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We also consider that 130 out of the 479 season ticket holders spent $1000 or more at the previous two home football games, hence:

n = 479, \pi = \frac{130}{479} = 0.2714

Hence the bounds of the interval are found as follows:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2714 - 1.96\sqrt{\frac{0.2714(0.7286)}{479}} = 0.2316

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The 95% confidence interval is (0.2316, 0.3112).

More can be learned about the z-distribution at brainly.com/question/25890103

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Step-by-step explanation:

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