Students want to study the propotion of people in their university community who have tested positive for COVID at any time. They obtain a random sample of 780 students, faculty and staff, a they asked if they had ever tested positive for COVID. In the sample of 780 members of the university community, 516 had tested positive for COVID at some point. Estimate the overall proportion of the university community that has tested positive for COVID. Use a 99% confidence level. All answers to 4 decimal places please.

Q: Out of 300 people sampled, 156 had kids. Based on this construct a 90% confidence interval for the…

A: X = 156 N = 300

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A: Obtain the 90% confidence interval for the population proportion. The 90% confidence interval for…

Q: In a survey of 2279 ​adults, 729 say they believe in UFOs. Construct a 90% confidence…

A:

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A: From the given information we construct 90% and 95% confidence interval.

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A: Provided information: Total number of adults = 460 and 262 had children 95% confidence level

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A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

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A: given data, n=120p^=0.57CI=0.99α=1-0.99=0.01we have to find out the confidence interval for the…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given data, n=152 x=101 p=x/n =0.664 The 95% CI is Zc=1.96

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A: We have to find margin of error.

Q: Find the Margin of Error for this poll, at the 95% confidence level.

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A:

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A: Given Data Sample Size, n = 510 p̂= 0.45 Significance level, α =1-0.99…

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A: For 95% confidence intervalα=1-CI=1-0.95=0.05So, zα2=z0.052=z0.025=1.96

Q: In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet…

A: We want to calculate the 90% confidence interval for each of the following proportions

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Q: What proportion of the sample reported that they had been cyberbullied?

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Q: The 90% confidence interval is from to. (Round to three decimal places as needed.)

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Q: What is the value of Z for this confidence interval?

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Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

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Q: n a survey of 4026 ​adults, 708 oppose allowing transgender students to use the bathrooms of the…

A:

Q: In a survey of 4061 ​adults, 738 say they have seen a ghost. Construct a​ 99% confidence interval…

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Q: In a recent poll, 150 people were asked if they liked dogs, and 55% said they did. Find the margin…

A:

Q: In a recent poll, 260 people were asked if they liked dogs, and 80% said they did. Find the Margin…

A: Given:

Q: in a recent poll, 220 people were asked if they liked dogs, and 36% said they did . find the margin…

A:

Q: t poll, 240 people were asked if they liked dogs, and 35% said they did. Find the Margin of Error…

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A: n = 800p^ = 0.1595% CI for p = ?

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A:

Q: 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare…

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Q: In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin…

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A:

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A:

Q: Find the margin of error for the​ 99% confidence interval used to estimate the population…

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A:

Q: Find the margin of error for the​ 99% confidence interval used to estimate the population…

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Q: In a recent poll, 230 people were asked if they liked dogs, and 72% said they did. Find the Margin…

A: