A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 3% margin of error at a 90% confidence level, what sample size is needed? (Note: round your z-score to three decimal places.)

Q: In a recent poll, 460 people were asked if they liked dogs, and 94% said they did. Find the margin…

A: Ans - Given   P  =  94%    = 0.94,     The sample size  n = 460 people          95%  confidence…

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

A:

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

A:

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 21 r2 = 39 n1 =…

A: Solution: From the given information, r1=21, r2=39, n1=100 and n2=85. The sample proportions are

Q: (b) What sample size should be obtained if he wants to be within 4 percentage points with 95%…

A: B) It is given that margin of error (E) is 0.04 and the confidence level is 0.95.

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: For a 99% confidence level, what are the critical values for one-tailed test? Draw the figure.…

A:

Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

A:

Q: n a recent poll, 510 people were asked if they liked dogs, and 45% said they did. Find the Margin of…

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

Q: The. Nielsen television ratings used a random sample of 2,000 homes and found that 45% of the homes…

A:

Q: In a recent poll, 240 people were asked if they liked dogs, and 69% said they did. Find the margin…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The owner of the AGT Gas Station wishes to determine the fraction of customers who pay using a…

A:

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: If n=240 and ˆpp^ (p-hat) =0.91, find the margin of error at a 90% confidence level Give your…

A:

Q: The researcher rejected the null hypothesis at the 95% confidence level where F(2, 14) = 53.54, p =…

A: F-table  / Technology can be used to find P-value. I am using Excel function,

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

A: (a). Find the best point estimate of the population proportion p: It is given that, in a poll of n =…

Q: In a recent poll, 240 people were asked if they liked dogs, and 69% said they did. Find the margin…

A: Given,sample size(n)=240sample proportion(p^)=0.69α=1-0.90=0.1α2=0.05Z0.05=1.645    (from Z-table)

Q: 1992, the women in two statistics classes for students in the liberal arts at a large northeastern…

A: In 1992, the women in two statistics classes for students in the liberal arts at a large…

Q: 2. A researcher wants to estimate the daily expenses of college students. He wants a 95% confidence…

A: We have given that,  Population standard deviation (σ) = 99.50, margin of error (E) = 45 and…

Q: A random sample of 600 voters in Centreville indicated that 90 of them believed their congressional…

A: Formula for confidence interval for population proportion : CI =p^ ± E  Where ,  p^ is sample…

Q: From a survey of 350 coworkers you find that 231 would like the company to provide on-site daycare.…

A: Given that,  Sample size is n= 350  And we find 231 would like the company to provide on-site…

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

A:

Q: In a previous study, it was found that p̂= .73 for a particular sample. Suppose we would like to…

A: Given information Error = 0.01 Confidence level = 0.98

Q: If n=570 and ˆpp^ (p-hat) =0.8, find the margin of error at a 95% confidence level

A: given that, n = 570 p^=0.8 confidence level = 95%

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 40 r2 = 33 n1 =…

A:

Q: answer

A: Given: Population proportion, p = 0.25 Margin of error, E = 0.06 Confidence interval = 95% Then, by…

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

A:

Q: How do I input the following into Excel? You plan to conduct a survey to find what proportion of…

A: The confidence level is 95%. The margin of error is 0.02 Since the proportion is not known, p= 5/50…

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

A: Given that: p= the probability of getting a person who answered yes to the question "Are you in…

Q: Find the critical tscore to three decimal places when the Confidence Level is 90% and the sample…

A: Provided information: Confidence level = 90% Sample size = 43

Q: If n=110 and ˆpp^ (p-hat) =0.71, find the margin of error at a 90% confidence level Give your…

A: Sample size n = 110 Sample proportion p^ = 0.71 Confidence level = 90% Formula Used: Margin of error…

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

A: From the given information, Margin error (E) = 0.001 Assume sample proportion = 0.5   The objective…

Q: In a survey, the planning value for the population proportion is p* 0.16. How large a sample should…

A: Obtain the sample size of a preliminary estimate for p is 0.16 with the 90% confidence.   The…

Q: NASA is interested in the true proportion of children who are interested in becoming astronauts. At…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: In a survey conducted by CNN, 130 of the 250 people that were randomly surveyed have a savings…

A: Given data, n=250 x=130 Sample proportion p=x/n =130/250=0.52 z-value at 90% confidence is Zc=1.645

Q: A pollster wants to conduct a pre-election poll with a margin of error of 2.5% and a 95% confidence…

A: We have given that,  Margin of error (E) = 2.5% = 0.025 and confidence level = 95%  Then, We will…

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: 3. Aresearcher wants to estimate the daily expenses of college students. He wants a 99% confidence…

A:

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

A:

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: 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 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: Two samples are taken with the following numbers of successes and sample sizes r1 = 24 r2 = 38 n1 =…

A:

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 32 r2 = 40 n1 =…

A: Obtain the 92% confidence interval for the difference between the two proportions. The 92%…

Q: Two samples are taken with the following numbers of successes and sample sizes r₁ = 23 r₂ = 34 n₁ =…

A: The provided information is  α=0.09 r1=23 r2=34 n1=82 n2=76 The sample proportion is…

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

A: From the given information, Margin error (E) = 0.001 Assume sample proportion = 0.5   The objective…

Q: The results of a recent poll on the preference of voters regarding the presidential candidates are…

A: Obtain the 95% confidence interval for the difference between the proportions of voters favoring…

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 24 r2 = 40 n1 =…

A:

Q: Identify the t-score for a 99% confidence interval if the sample size is 70. t = The answer isnt…

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