A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 25% margin of error at a 99% confidence level, what size of sample is needed? Hint: Textbook Video

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Q: Use the confidence interval to find the margin of error and the sample mean. (1.52,2.06)

A: Given: Confidence interval is (1.52, 2.06) To determine: The margin error and The sample mean.…

Q: A poll asked respondents if they felt vulnerable to identify theft. In the poll, n= 1000 and x= 501…

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Q: Use the confidence interval to find the margin of error and the sample mean. (1.71, 1.99)

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A: Given X=154 n=250

Q: Political survey- A political analyst found that 43% of 300 randomly seleted republican voters feel…

A: It is given that p hat is 0.43 and sample size is 300. The confidence level is 0.95.

Q: If n=25, (x-bar)=49, and s=6, find the margin of error at a 90% confidence level Give your answer to…

A: From provided information, n=25, x̅=49 s=6 Confidence level is 90% i.e. (1-α) =0.9

Q: 3. The American Medical Association (AMA) wishes to determine the percentage of obstetricians who…

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Q: Suppose a simple random sample of 700 was taken from a large population. The sample had 32%…

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A: (a)given that,possible chances (x)=71size(n)=1438success rate ( p )= x/n = 0.0494point of estimate =…

Q: If n = 390 and p^ (p-hat) = 0.8, construct a 99% Confidence Interval.

A: Given that, Sample size n=390,   and proportion of successes in sample of size n=0.8 (1-α) %…

Q: lorry is a researcher who is curious about the proportion of students who are planning to pursue a…

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Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

A:

Q: A national polling organization wishes to generate a 98% confidence interval for the proportion of…

A: We need to find the sample size for the given interval.

Q: If n=31, ē(x-bar)=35, and s=5, find the margin of error at a 99% confidence level Give your answer…

A: We have to find margin of error.

Q: A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and…

A: Given, Margin of error, E = 0.05 Confidence level = 95%

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Sample size:The minimum sample size for a desired confidence level, α with a given margin of error,…

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Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given: Margin of error = 3% At 95% confidence level, the size of sample as to be calculated for the…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: Graduation, again As in Exercise 29, we hope to esti-mate the percentage of adults aged 25 to 30 who…

A: It is given that, Where, C and E denote the confidence level and margin of error respectively. The…

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

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Q: A proportion, p, that many public opinion polls estimate is the number of Americans who would say…

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Q: If n=13, = 42, and s=7, find the MARGIN OF ERROR at a 99% confidence level

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Q: A study done by researchers at Alfred University concluded 70% of the 4380 student athletics who…

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Q: A state's Department of Education reports that 12% of the high school students in that state attend…

A: A confidence interval is a statistical concept that has to do with an interval that is used for…

Q: VOTE VOTE VOTE Out of 100 people sampled, 82 preferred Candidate A. Based on this, estimate what…

A: Given that,Number of samples =n=100Preferred samples =x= 82Sample proportion= p= x/n=82/100p=0.82

Q: In a poll of 1000 randomly selected voters in a local election, 618 voters were against fire…

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Q: Use the confidence interval to find the margin of error and the sample mean.   (.364,0.500)

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Q: Out of 600 people sampled, 414 preferred Candidate A. Based on this estimate, what proportion (as a…

A: Given : Sample size of people (n) = 600 Out of this 600 sampled people ; 414 preferred candidate A…

Q: VOTE VOTE VOTE Out of 300 people sampled, 186 preferred Candidate A. Based on this, estimate what…

A: Given that,   x=186,n=300 The sample proportion is, Critical values: By using the standard normal…

Q: a. Estimate the true proportion P2 of all the people who are willing to go on the Kumepr3ko…

A: Provided information is,  Poll was conducted on twitter to know the stands of the youth on the…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: We have to find sample size...

Q: 12) Find the sample size need to find the Population Proportion if the margin of error is 5%, the…

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Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given data n=1026 x=520 confidence interval=95%

Q: = 360 and p = 0.09, find the margin of error at a 99% confidence level

A:

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​…

A: From the provided information, n = 1028 and x = 594 The proportion can be obtained as:

Q: a recent poll, 210 people were asked if they liked dogs, and 42% said they did. Find the margin of…

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Q: Trainers at a dog training facility find want to know how successful their recently updated program…

A: 250 owners with dogs randomly select; n=250 100 says yes if they consider their dog well behaved;…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: Political Survey- A political analyst found that 43% of 300 randomly selected republican voters feel…

A: It is given that p hat is 0.43 and sample size (n) is 300. The confidence level is 0.95.

Q: 1(b). At 99% confidence, what is the margin of error?

A: here use given data table

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Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given, The sample proportion is,

Q: Out of 300 people sampled, 78 had kids. Based on this, construct a 99% confidence interval for the…

A: