A polling organization has been hired to conduct a survey to determine the proportion of people who are likely to support an upcoming ballot initiative. To help determine the size of the sample required for the main poll, a preliminary poll of 20 people is taken that yields the results below. (Yes indicates that the person will support the initiative, No indicates that they won't.)   No Yes No No Yes No No Yes No No No Yes No Yes Yes No No Yes Yes Yes No Yes No No No Yes No No Yes Yes No No No Yes Yes No Yes Yes No Yes   Based on the results of the peliminary poll, how large a sample is required for the main poll, assuming that the main poll should have a margin of error of 3.1% and a confidence level of 96.5%.

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

A:

Q: The city of Raleigh has 11,600 registered voters. There are two candidates for city council in an…

A: Given,Population size, N = 11,600Sample size, n = 400Number of voters said they'd vote for Brown, x…

Q: For an opinion on bicycle racks, which segments of the school population would you sample? o…

A: For an opinion on bicycle racks, which segments of the school population would you sample?

Q: Frank Catton, the general manager of Billybob's floating raft hotel and casino in Tunica…

A:

Q: Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown.…

A: It is given thatFor Brown:Favourable cases, x = 172Sample size, n = 400

Q: The city of Raleigh has 6,800 registered voters. There are two candidates for city council in an…

A: Given,Population size, N = 6800Sample size, n = 400Number of voters said they'd vote for Brown, x =…

Q: You want to study adults’ opinions on the recent elections. You ask 100 college students to fill out…

A: We are going to study on adults opinions on the election. So that our sampling frame is all adults.…

Q: A 2010 survey asked 870 randomly sampled registered voters in California "Do you support? Or do you…

A: (a)Total number of college graduates n1=435Number of college graduates not having an opinion because…

Q: The school librarian wants to determine how many students use the library on a regular basis.  What…

A: Here we want to know sampling type.

Q: Determine which Sample Type is used in  the following scenarios.   President Biden want to survey…

A: A population is the set of all objects of interest. A sample is a subset of the population. It is…

Q: In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a…

A: A population is a collection of all possible observations, whereas a census tries to gather whole…

Q: n IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of…

A: Given: μ=100, σ=16 and SE=8.   The formula of standard error is SE=zσn

Q: A university dean is interested in determining the proportion of students who receive some financial…

A:

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

A:

Q: Suppose that a poll was taken in order to assess the number of gypsy moth nests in Pennsylvania. 200…

A: Given information: Problem: A poll was taken in order to assess the number of gypsy moth nests in…

Q: The city of Frederick has 9432 registered voters. There are two candidates for the city council in…

A: Solution-: The city of Frederick has 9432 registered voters. The day before the election, a…

Q: An ice hockey team is considering changing their team name and mascot and would like to measure city…

A: Here we want to choose method would not provide voluntary response sample.

Q: survey asked 836 ndomly sampled registered Voters in California "Do you support or oppose arilin…

A: A z-test for two proportions is a hypothesis test that attempts to make a claim about the population…

Q: A college administrator wants to survey 250 students that attend her college to see if students are…

A: Simple definitions of given sampling techniques : (a) Cluster Sampling : Surveying all individuals…

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: The city of Raleigh has 7,400 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: Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown.…

A:

Q: The table below shows the results of a survey that asked 1069 adults from a certain country if they…

A: Solution-: We have given following table:   Support Oppose Unsure Total Males 157 330 12 499…

Q: Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political…

A: Given:x1=639, n1=852x2=378, n2=525   a)Here,p^1=x1n1=639852=0.75   Therefore, the proportion of…

Q: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there solid…

A: Given: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there…

Q: Readers of the magazine Popular Science (August 1990) were asked to phone in (on a 900 number) their…

A: The poll conducted by Popular Science in 1990, where readers were asked to phone in their responses…

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.