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Karolina [17]
3 years ago
6

A sample that does not accurately represent the population is a _________.

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

The word "random' does not describe the sample.

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False, A equation DOES have to have a equal sign.

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the sum of two numbers is 9 if what number is subtracted from the other of the result is 5 find the numbers​
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2 years ago
In a​ poll, 37​% of the people polled answered yes to the question​ "Are you in favor of the death penalty for a person convicte
Kay [80]

Answer:

The number of people ​surveyed was 330.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the population proportion is:

CI=\hat p\pm z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}

The margin of error for this interval is:

MOE= z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}

The information provided is:

\hat p=0.37\\MOE=0.05\\\text{Confidence level}=0.94\\\Rightarrow \alpha=0.06

The critical value of <em>z</em> for 94​% confidence level is, <em>z</em> = 1.88.

*Use a <em>z</em>-table.

Compute the value of <em>n</em> as follows:

MOE= z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}

      n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)}}{MOE}]^{2}

         =[\frac{1.88\times \sqrt{0.37(1-0.37)}}{0.05}]^{2}\\\\=(18.153442)^{2}\\\\=329.5475\\\\\approx 330

Thus, the number of people ​surveyed was 330.

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3 years ago
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