There are 2,000 eligible voters in a precinct. 500 of the voters are selected at random and asked to indicate whether they planned to vote for Democratic incumbent of the Republican challenger. Of the 500 surveyed, 240 said they were going to vote for the Democratic incumbent. Using the 0.99 confidence coefficient, what are the confidence limits for the proportion that plan to vote for the Democratic incumbent?

Q: A state representative wants to know how voters in his district feel about enacting a statewide…

A:

Q: The city of Raleigh has 6800 registered voters. There are two candidates for city council in an…

A: Given : telephone poll of 500 randomly selected registered voters was conducted. 208 said they'd…

Q: Find the 95% confidence interval estimate for the Conservative share of the vote.

A: Given : Sample Size, n = 1000 Number of successes, x = 464 confidence level,c=0.95

Q: The city of Raleigh has 9900 registered voters. There are two candidates for city council in an…

A: Given that 9900 registered voters  Two candidates: Brown and Feliz  Sample size (n)=450 137: said…

Q: dates for city council in an upcoming election: Brown and Feliz. The day before the election, a…

A: Given:n=sample size=350x=110 The formula and calculations for sample proportion is:p^=xn  =110350…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: The city of Raleigh has 6900 registered voters. There are two candidates for city council in an…

A: The objective of this question is to calculate the sample statistic for the proportion of voters…

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

A: Given: n=600 and x=480. Then,p^=xn=480600=0.8

Q: The city of Raleigh has 7200 registered voters. There are two candidates for city council in an…

A: It is given that, a day before the election, a telephone poll of 200 randomly selected registered…

Q: Denise Khalif is a running candidate for her school's presidential position. She is determined to…

A: Given information: There are a total of 1500 students enrolled. Out of 1500, only 500 students are…

Q: Out of 500 people sampled, 445 preferred Candidate A. Based on this, estimate what proportion of the…

A: Given Data: p=445/500=0.89 n=500   z-value corresponding to 90% Confidence =1.645

Q: The city of Raleigh has 7600 registered voters. There are two candidates for city council in an…

A: It is given that out of the 250 voters 118 said that they would vote for Brown. The proportion of…

Q: A polling agency wants to determine the percentage of voters in favor of extending tax cuts. They…

A:

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: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: Solution

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: Out of 600 people sampled, 546 preferred Candidate A. Based on this, estimate what proportion of the…

A: X = 546 N = 600 95% confidence level

Q: Find the number of respondents needed in a poll to determine, within 1.5% margin of error, the…

A: The answer is attached below,

Q: Aleyla, an educator, would like to investigate whether students’ IQ have an effect on their exam…

A: Correlation is used to measure the strength of association between the two numerical variable. It…

Q: In a survey of 323 adults over 50, 60% said they were taking vitamin supplements. Find the margin of…

A:

Q: Form 90%, 95%, and 99% confidence intervals for the proportion of voters who favor the candidate.…

A: Given that Sample size n = 1000 Number of respondents favor the candidate, X = 214 The critical…

Q: In a CBS poll of 1289 adults, nationwide, asking whether they favor or oppose teacher and school…

A:

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

A: From the provided information, Sample size (n) = 395 Out of which 210 are against the new…

Q: A polling agency wants to determine the percentage of voters in favour of extending tax cuts. they…

A: Given information- Margin of error, E = 2% = 0.02 Confidence level, c = 95% Since nothing is known…

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

A:

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

A: From the provided information, Margin of error (E) = 7% that is 0.07 Confidence level = 98% Assuming…

Q: The city of Raleigh has 9100 registered voters. There are two candidates for city council in an…

A: There are 9100 registered voters. Among randomly selected 300 registered voters, 125 said they'd…

Q: a teacher that historically 85% of students in the class will want to local zoo. The teacher…

A:

Q: A Polling agency wants to determine the percentage of waters in favour of extending tax cuts. they…

A:

Q: The city of Raleigh has 9900 registered voters. There are two candidates for city council in an…

A: The objective of this question is to find the sample statistic for the proportion of voters surveyed…

Q: The city of Raleigh has 11000 registered voters. There are two candidates for city council in an…

A: The question is about proportion.Given :Total no. of registered voters in a city ( N ) =…

Q: Sherwin Williams sells paints in hardware stores across the U.S. The company maintains a large sales…

A: From the given information, the data values are

Q: Mr. Scoville ran for school board last year and got 18% of the vote.  He is running again this year.…

A: From the provided information,Mr. Scoville ran for school board last year and got 18% of the vote…

Q: Out of 600 people sampled, 132 preferred Candidate A. Based on this, estimate what proportion of the…

A:

Q: A newspaper reported the results of a political poll about which candidate likely voters preferred,…

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

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

A: Given observation Error = 10% = 0.1 Confidence level = 0.99

Q: A researcher wants to do a study to see what the proportion of vaccinated people is in a certain…

A:

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: Here the proportion of people liking dark chocolate is 37% with a margin of error 2.5%  So, the…

Q: 900 voters in the town and found that 70% of the residents favored construction. Using the data, a…

A: The provided information are:

Q: In a recent poll, 270 people were asked if they liked dogs, and 34% said they did. Find the margin…

A: Sample size=n=270

Q: In a recent poll, 170 people were asked if they liked dogs, and 76% said they did. Find the margin…

A: Sample size n =170 Sample proportion p^=0.76

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.