3 years ago

PLEASE Help!!! Explain.

Mathematics

2 answers:

Misha Larkins [42]3 years ago

8 0

Answer is B thanks for using brainly

marishachu [46]3 years ago

8 0

better be right just jokeing :)

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20) In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at

Allisa [31]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

n = 1200

x = 32% of 1200

So, $\hat{p}=32\5=0.32$

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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3 years ago

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olasank [31]

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3 years ago

Also scores eight points in six minutes if she continues at this rate how many points will she scored 30 minutes

Ronch [10]

Answer:

She will score 40 points in 30 minutes.

Step-by-step explanation:

30 minutes divided by 6 minutes is 5, times 8 points is 40 points.

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3 years ago

Domain and range of y=-.50x+12

Alja [10]

Domain: all real numbers
Range: y<0

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4 years ago

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USPshnik [31]

The answer to the question

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