A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 7% margin of error at a 95% confidence level, what size of sample is needed? When finding the z-value, round it to four

Q: In a survey, 43% of the respondents stated that they talk to their pets on the telephone. A…

A: Given information: Percentage of the respondents who stated that they talk to their pets on the…

Q: A research center claims that at least 24% of adults in a certain country think that their taxes…

A:

Q: A research center claims that at least 31% of adults in a certain country think that their taxes…

A:

Q: In a survey, 31% of the respondents stated that they talk to their pets on the telephone. A…

A: Given that n =150 ,p = 0.31

Q: In a survey, 36% of the respondents stated that they talk to their pets on the telephone. A…

A:

Q: A research center claims that at least 30% of adults in a certain country think that their taxes…

A: Given, n = 1000 p^=0.26 α = 0.01

Q: A research group wants to estimate the proportion of consumers who plan to buy a scanner for their…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

Q: Dylan wants to determine a 95% confidence interval for the true proportion of high school students…

A:

Q: An apple, 37% of the people polled answered yes to the question "are you in favor of the death…

A: The provided information is: Sample proportionsp^=0.37 Margin of errorE=0.03 Level of…

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: In a survey, 43% of the respondents stated that they talk to their pets on the telephone. A…

A: Given Information: 43% of the respondents stated that they talk to their pets on the telephone. A…

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: In a survey, 41% of the respondents stated that they talk to their pets on the telephone. A…

A: It is given that, p0 is 0.41, the sample size n is 210.

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: A survey at a certain university found that 21 out of a random sample of 350 students had over…

A:

Q: Suppose that you intend to find a 95% confidence interval for a population mean by applying the…

A: The z value at 95% confidence level from the standard normal table is 1.96.Let σ is the population…

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

A: Formula for margin of error is,

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

A: It is given that margin of error (E) is 0.02 and the confidence level is 0.80.

Q: Thirty randomly selected students took the calculus final. If the sample mean was 74.2 and the…

A: From the provided information, Sample size (n) = 30 Sample mean (x̅) = 74.2 Standard deviation (s) =…

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: 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: Michael wants to make a confidence interval estimate for the proportion of community members in…

A:

Q: A research center claims that at least 31% of adults in a certain country think that their taxes…

A: a) Assume that p is the true population proportion of adults, who think their taxes will be audited.

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

A:

Q: If the candidate only wants a 6% margin of error at a 99% confidence lev

A: Given that, The margin of error (E) is 0.06. Assume that p as 0.5.

Q: Cora wants to determine a 80 percent confidence interval for the true proportion of high school…

A: GivenMargin of error(E)=0.04cofidence level(c)=80%assume population proportion (p)…

Q: What is the critical z value for a confidence level of 99% (to 3 decimal places) for the difference…

A: We have given that  Favourable cases, X1 = 98 Favourable cases, X2 = 80 Sample size, n1 = 140 Sample…

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

A: Obtain the sample size. The formula of sample size is, Use EXCEL Procedure for finding the critical…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: It is given that there is 95% confidence.

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: 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: What is the lower bound of a 90% confidence interval for the percent of the population that would…

A: here given ,  In a sample of 235 people, 40% responded they would vote for candidate A.  p^ = 0.40…

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: The Roper poll states that 56% of the 1,021 Americans questioned think that UFOs are real. For each…

A: Given data: n=1021 α=0.80

Q: The engineering department at a major university claims that 20% of its graduates are women. A…

A:

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: ) Beth wants to determine a 90 percent confidence interval for the true proportion of high school…

A:

Q: contingent’s survey, would you agree with the Newsweek poll? Perform a hypothesis test, using the…

A: Given data number of success , x= 2 sample size, n =76 population proportion,p= 0.13…

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

A:

Q: In a survey, 43% of the respondents stated that they talk to their pets on the telephone, A…

A: The hypothesized proportion is 0.43.

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…

A:

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

A: It is given that the margin of error is 0.015.

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

A:

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

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: Beth wants to determine a 99% confidence interval for the true proportion of high school students in…

A: Suppose p is the true proportion of high school students in that area who attend their home…

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: b. In the year 2000, a survey of were aske those surveyed, 279 reported that Abraham Lincoln was the…

A: