A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 8% margin of error at a 99% confidence level, what size of sample is needed? (Because the sample population proportion is not given, assume p is 0.5 and round the final answer up to the next whole number.) n=

Q: Dylan wants to determine a 99 percent confidence interval for the true proportion of high school…

A:

Q: Use the formula in this example to determine the sample size, n. The estimated prevalence is 16%,…

A: Given that  p=16%=0.16 , Margin of error=E=5%=0.05 91% confidence level

Q: If n=23, ¯xx¯(x-bar)=30, and s=4, find the margin of error at a 90% confidence level

A:

Q: A political action group wants to conduct a poll to determine what percentage of people will vote…

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

Q: If n=28, ¯xx¯(x-bar)=48, and s=2, find the margin of error at a 90% confidence level Give your…

A: Margin of error = E E = tCriticalsn

Q: Suppose you select a random sample of N=81, and find X = 50, and s = 9.9. Determine the 99%…

A: Given Mean=50 Standard deviations=9.9 n=81

Q: If n=21, I(x-bar)-40, and s=5, find the margin of error at a 80% confidence level Give your answer…

A: Given that : n = 21 x̅ = 40 s = 5 r = 80% Formula : Margin of error = tα [s / √(n)]

Q: If n=31, ¯xx¯(x-bar)=38, and s=4, find the margin of error at a 95% confidence level Give your…

A: Here, the population standard deviation is unknown. Hence, t - distribution is appropriate to use as…

Q: If n=23, ¯x(x-bar)=47, and s=2, find the margin of error at a 90% confidence level Give your answer…

A:

Q: If n=16, x(x-bar)=43, and s=9, find the margin of error at a 99% confidence level Give your answer…

A: The random variable X follows normal distribution. The sample size is 16. The sample mean is 43. The…

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

A: Given information: x=586 n=1006

Q: If n=26, ¯xx¯(x-bar)=43, and s=9, find the margin of error at a 98% confidence level Give your…

A:

Q: In this question If n=20, ¯xx¯(x-bar)=38, and s=8, find the margin of error at a 90% confidence…

A: Given, Sample size = 20 Sample mean = 38 Sample standard deviation = 8   Degrees of Freedom:

Q: If n=23, ¯xx¯(x-bar)=31, and s=9, find the margin of error at a 99% confidence level Give your…

A: Solution

Q: If n=22, ¯xx¯(x-bar)=39, and s=6, find the margin of error at a 98% confidence level Give your…

A:

Q: If n=25, ¯xx¯(x-bar)=49, and s=3, find the margin of error at a 99% confidence level Give your…

A: In question, Given sample of size n = 25 and mean = 49 standard deviation s = 3. Then we'll find the…

Q: find the margin of error at a 99% confidence level

A: The confidence level is 99%. The significance level is 0.01. The degrees of freedom is,…

Q: If n=30, ¯xx¯(x-bar)=49, and s=4, find the margin of error at a 99% confidence level Give your…

A: Given,n=30x¯=49s=4degrees of freedom(df)=n-1df=30-1=29α=1-0.99=0.01α2=0.005t0.005(29)=2.756…

Q: If n=12, ¯xx¯(x-bar)=35, and s=5, find the margin of error at a 99% confidence level Give your…

A: Sample size = 12 Sample mean = 35 Sample standard deviation = 5

Q: An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars…

A: Population proportion estimate p^=0.28 Confidence level = 99% Error = at most 0.03

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

A: Note:Hey, since there are multiple sub-parts question posted, we will answer first three sub-parts.…

Q: Out of 400 people sampled, 300 preferred Candidate A. Based on this, estimate what proportion of the…

A: Given that Out of 400 people sampled, 300 preferred Candidate A.  Here x=300 n=400

Q: find the margin of error at a 95% confidence level

A: Formula for margin of error is,

Q: If n=29, ¯xx¯(x-bar)=34, and s=3, find the margin of error at a 95% confidence level Give your…

A: Given problem Given that   n = 29 x-bar = 34  s = 3 The margin of error at a 95% confidence level…

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: From the provided information, Population proportion (p) = 0.2 Confidence level = 99% The z value at…

Q: If n=13, ¯x(x-bar)=41, and s=5, find the margin of error at a 80% confidence level Give your answer…

A:

Q: If n=23, ¯x(x-bar)=34, and s=8, find the margin of error at a 99% confidence level Give your answer…

A: Solution: From the given information, n=23, x-bar=34 and s=8. The confidence level is 0.99.

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: If n=10, ¯x(x-bar)=38, and s=5, find the margin of error at a 80% confidence level Give your answer…

A:

Q: If n=17, ¯xx¯(x-bar)=47, and s=4, find the margin of error at a 80% confidence levelGive your answer…

A: Given data Sample size (n) = 17 x̅ = sample mean = 47 s = sample standard deviation = 4 Confidence…

Q: In a recent poll, 390 people were asked if they liked dogs, and 8% said they did. Find the margin of…

A: n=390 p = 8%

Q: Out of 200 people sampled, 10 preferred Candidate A. Based on this, estimate what proportion of the…

A: We have given that,  Favorable cases (X) = 10 and sample size (n) = 200 Then,  We will find 95%…

Q: In a survey, 45% of the respondents stated that they talk to their pets on the telephone. A…

A: It is given that in a survey 45% respondents accept that they talk to their pets on phone. To check…

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

A:

Q: In a survey, 37% of the respondents stated that they talk to their pets on the telephone. A…

A: given  P0 =0.37 n=170

Q: If n=11, ¯xx¯(x-bar)=35, and s=8, find the margin of error at a 90% confidence level. Answer to two…

A: Margin of error = t critical * Standard error where    t critical is the value of t for 90%, two…

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

A:

Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Let p denote the proportion of people answered yes to the question. Let E denote the margin of…

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

A: The given question requires accurate results, Hence I will use excel to solve this question.…

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

A: Solution: 12. From the given information, x=586 and n=1006.

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: find the margin of error at a 90% confidence level

A: Given : n=330 , p-hat=0.28  , α=0.10 We want to find the margin of error at a 90% confidence level.

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

A:

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: Solution: Given information: n= 500 Sample size Here we need to interpret the meaning of each…

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

A:

Q: If n=24, ¯xx¯(x-bar)=31, and s=7, find the margin of error at a 99% confidence level Give your…

A: Obtain the margin of error for a 99% confidence interval. The margin of error for a 99% confidence…

Q: If n=32, ¯xx¯(x-bar)=49, and s=10, find the margin of error at a 95% confidence level

A:

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: Provided information is, The American Heart Association is about to conduct an anti-smoking campaign…

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

A: When nothing known about the population proportion (p), Consider p=0.50. Find z-critical value:…

Q: If n=23, x(x-bar)=47, and s=3, find the margin of error at a 98% confidence level Give your answer…

A: Margin error is the difference between the estimated value and the original value. Here the critical…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.