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larisa [96]
3 years ago
5

Please help! I need help with this question.

Mathematics
1 answer:
alexdok [17]3 years ago
6 0

Answer:

check online for more information

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-24x>-72 /x(-1)

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4 years ago
20) In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at
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Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

n = 1200

x = 32% of 1200

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We need to find 95% confidence interval.

so, z = 1.96

So, margin of error would be

z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\=1.96\times \sqrt{\dfrac{0.32\times 0.68}{1200}}\\\\=1.96\times 0.0135=

So, Interval would be

\hat{p}\pm \text{margin of error}}\\\\=0.32\pm 0.0263\\\\=(0.32-0.0263,0.32+0.0263)\\\\=(0.2937,0.3463)\\\\=(0.294,0.346)\\\\=(29.4\%,34.6\%)

Hence, Option 'c' is correct.

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