If 13 of 200 male voters and 9 of 159 female voters favor a certain candidate running for governor of Illinois, find a 99% confidence interval for the difference between the actual proportions of malė and female voters who favor the candidate.

Q: 2. Suppose that you take a random sample of 360 people who voted in the last election in a heavily…

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Q: A poll of 827 students at Alpha State College found that 61% of those polled preferred a quarter…

A: Given that Sample size n = 827 Sample proportion of students who prefer a quarter system = 0.61 The…

Q: Suppose that the state of Nebraska wants to take a poll on the proportion of its citizens who…

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

Q: A survey of 865 voters in one state reveals that 408 favor approval of an issue before legislature.…

A: According to information provided, Number of favorable cases (X) = 408         Total number of cases…

Q: A gubernatorial candidate wants to analyze how she is performing with different.age groups. Her…

A: We are 99% confident the difference in population proportions of people 18-24 years old who plan to…

Q: In a survey of 1250 U.S. adults, 363 said that their favorite sport to watch is football. The 95%…

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

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

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 (E) is 0.08.

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

A: GivenMargin of Error(E)=0.03Confidence Interval(c)=90%Let p^=0.5α=1-0.90=0.10α2=0.05zα2=z0.05=1.6449…

Q: The newspaper conducted a survey and asked some of the city's voters which candidate they preferred…

A: For the given confidence interval, the margin of error, E is:

Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

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Q: In a survey of 464 registered voters, 143 of them wished to see Mayor Paz lose her next election.…

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Q: 3) In a sample of 172 JCC full-time students, 61 of them prefer to come to campus to take their…

A: Solution: Given information: n= 172 Sample size of JCC full time students x= 61 students prefer to…

Q: The results of a recent poll on the preference of teenagers regarding the types of music they listen…

A: We have given that,  X1= 448, n1= 800 and X2 =585, n2 = 900 Then,  We will find the 95% confidence…

Q: In a recent poll, from a sample of 300 likely voters, 175 answered they approve the way the…

A: We have given that,  Favorable cases (X) = 175 and sample size     (n) = 300 then,  We will find the…

Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…

A: It is given that the proportion of the students who preferred a quarter system to a trimester…

Q: A poll was conducted to examine if people are happy with the government. 400 people were asked and…

A: It is an important part of statistics . It is widely used .

Q: A paper reported a (1-a) confidence interval for the proportion of voters is (0.561, 0.599) based on…

A: Total number of people is 2056. The proportion of voters is (0.561, 0.599)

Q: In an exit poll of 625 scientifically and randomly selected voters, 340 expressed support for…

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Q: A recent poll of 900 of your fellow students indicates that 38% would vote for you as "most likely…

A: Given n=900 X1=38 X1=33

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

A: It is given that the confidence level is 0.90 and margin of error (E) is 0.01.

Q: Suppose we take a SRS of high school seniors and get a 95% confidence interval that 250 to 278…

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Q: in a survey of 499 randomly selected gun owners, it was found that 62 of them said they owned a gun…

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Q: if for some reason it was not possible to obtain the 99% confidence interval from SPSS, how could…

A: Given information: Confidence level=99%=0.99α=1%=0.01

Q: If 132 of 200 male voters and 90 of 159 female voters favor a certain candidate running for governor…

A: X1=132, n1=200 X2=90, n2=159  p̂1=X1/n1  p̂2=X2/n2

Q: 95% confidence interval for the proportion of adults in the United States who say that their…

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Q: In a recent research poll, 83.4% of 500 randomly selected men in the U. S. knew the name of our…

A: There are two independent samples which are men and women. We have to construct 95% confidence…

Q: A poll of 5000 residents in Brazil, Canada, China, France, Malaysia, South Africa, and the United…

A: From the provided information, Sample size (n) = 5000 805 of the responses, was doctors, nurses, and…

Q: A student polls his school to see if students in the school district are for against the new…

A: Given,n=400x=85p^=xnp^=85400=0.21251-p^=1-0.2125=0.7875α=1-0.90=0.1α2=0.05Z0.05=1.645    (from…

Q: A pollster is going to sample a number of voters in a large city and construct a 98% confidence…

A: Given: Confidence level is 98% Margin of error is 0.05 Required: To find the sample size.

Q: In a random sample of 400 residents of Nassau County, 320 residents indicated that they voted for…

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Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

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Q: n = 480 and X = 384, construct a 90% confidence interval for the population proportion, p. Give…

A: Here is given that, n =480   x = 384 We will use one proportion  z confidence interval.

Q: A poll is taken among residents of a city and its suburbs to determine the feasibilities of a…

A: The associate with interval estimate is called a confidence interval. This probability indicates how…

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

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

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

A: Given:Margin of error (E) = 0.09Confidence level = 90%Since, the proportion of people that support…

Q: The pizza Shop wanted to determine what proportion of its customers ordered an only cheese pizza.…

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Q: Of 130 adults selected randomly from one town, 30 of them smoke. Construct a 90% confidence interval…

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

A: Given that, If the prior information is unknown, assume that the sample proportion is, p^=0.50…

Q: If 4 samples from 4 populations are given, then what is the probability of no Type 1 error at 99%…

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

A: Find z-critical value:…

Q: A survey of 300 union members in New York State reveals that 112 favor the Republican candidatefor…

A: Given information- Confidence level, c = 98% Population proportion of all New York State union…

Q: 6) When 415 college students were surveyed, 175 said they own their car. Construct a 95% confidence…

A: Given, The sample proportion is, Critical value: Using z-table, the z-critical value at the given…

Q: in a public opinion pool 1000 randomly selected persons were asked whether they would vote for…

A: Here, x =357 The sample size n = 1000. The absolute value of Zα/2 is 1.645 using the Excel formula…

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

A: It is given that the sample size is 500.

Q: In a survey of 952 respondents, 620 of them voted in a recent election. Find a 95% confidence…

A: From the provided information, Number of respondents (n) = 952 Number of respondents who voted in a…

Q: A statistics professor at a major university asked her students whether or not they were registered…

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Q: The last poll of 144 voters in Iowa shows that 19% of voters will vote for him in the Iowa…

A: From the given information,Sample size(n) = 144,Sample proportion (p) = 0.19.Confidence level (1-α)…

Q: When 500 college students were surveyed, 30% said that they own their car. Construct a 95%…

A: Here we want to find the 95% confidence interval.

Q: Imagine that the confidence interval around a candidate's popularity score is [37.22,48.86],what is…

A: The confidence interval provides an estimated range of values that includes an unknown population…