Questions from Statistics


Q: Translate the statement into a confidence interval. Approximate the level of

Translate the statement into a confidence interval. Approximate the level of confidence. In a survey of 1052 parents of children ages 8–14, 68% say they are willing to get a second or part-time job to...

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Q: The equation for determining the sample size / can be

The equation for determining the sample size can be obtained by solving the equation for the margin of error for n. Show that this is true and justify each step.

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Q: Let p be the population proportion for the situation. Find point

Let p be the population proportion for the situation. Find point estimates of p and q. In a survey of 1040 U.S. adults, 478 believe the government should be able to access encrypted communications whe...

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Q: Let p be the population proportion for the situation. Find point

Let p be the population proportion for the situation. Find point estimates of p and q. In a survey of 2016 U.S. adults, 1310 think mainstream media is more interested in making money than in telling t...

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Q: Let p be the population proportion for the situation. Find point

Let p be the population proportion for the situation. Find point estimates of p and q. In a survey of 2016 U.S. adults, 665 believe America should stop terrorism at all costs.

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Q: Use the confidence interval to find the margin of error and the

Use the confidence interval to find the margin of error and the sample proportion. (0.905, 0.933)

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Q: In a survey of U.S. adults, 16%

In a survey of U.S. adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. adults and ask them whether they have had someone take o...

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Q: Use the confidence interval to find the margin of error and the

Use the confidence interval to find the margin of error and the sample proportion. (0.245, 0.475)

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Q: Use the confidence interval to find the margin of error and the

Use the confidence interval to find the margin of error and the sample proportion. (0.512, 0.596)

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Q: Does a population have to be normally distributed in order to use

Does a population have to be normally distributed in order to use the chi-square distribution?

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