What is the margin of error of a 95% confidence interval for the proportion that beat profit estimate

Q: If you think a data point is an outlier, what test can you perform to see if you should omit the…

A: An outlier in a data set is a value that is significantly large or small compared to the other…

Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Given Data: x=722 n=1762   p^=7221762=0.4098

Q: Compute the margin of error of the 90% confidence level when a = 3 and n= 30

A: Given that  ?=3 , n=30 Formula for margin of error  E=Zc*?/√(n)

Q: In a telephone survey of 1100 adults, 740 adults expressed concern about the future health of social…

A:

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 television station surveys 200 customers and finds that 23% of customers watch the evening news.…

A: Given data n=200 p=23% confidence level=99%

Q: If the margin of error in an estimate for the mean weight of a shipment is + or -2 pounds at a…

A: From the provided information, The margin of error at a confidence level of 95 percent = ±2 The…

Q: The internal auditing staff of a local manufacturing company performs a sample audit each quarter to…

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Q: Explain which would result in a wider large-sample confidence interval for : a 90%pconfidence level…

A: The z critical value for 95% confidence interval is 1.96 and the z-critical value for 90% confidence…

Q: A recent survey asked the question, “Have you ever cut off communication with a family member…

A: Given that, p^=0.17,n=5592 Critical values: By using the standard normal table of Z, the critical…

Q: If you knew that a study reported that 73% of pre-kindergarten children ages 3 to 5 whose mother had…

A:

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

A: The formula for the sample size is as follows: Here, zα/2 is the critical value at 99% confidence…

Q: A magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A: A magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

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

A: The provided information is p=0.14q=1-p=1-0.14=0.86n=500E=3%=0.03p-Represents the proportion of…

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

A: Determine the size of sample is needed. The size of sample is needed is obtained below as follows:…

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

A:

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96 and E=0.02.

Q: If you think a data point is an outlier, what test can you perform to see if you should omit the…

A: Given that the number of data points in the set is 8.

Q: The confidence interval was (22, 26) What was the point estimate? What was the margin of error?

A: Given confidence interval was (22, 26)

Q: According to Thomson Financial, through January 25, 2018, the majority of companies reported profits…

A: The sample proportion of companies showed beat estimates is, p^=104162=0.6420 The sample proportion…

Q: A quality controller wants to estimate the proportion of high quaity goods out of a batch of…

A:

Q: Explain the meaning of a poll that says 55% of Americans approve of the job the president is doing,…

A: According to the given information, a poll that says 55% of Americans approve of the president's…

Q: If we wanted to reduce the margin of error to 3.5 per cent, how big would our sample ze have to be…

A: We have given that,  Margin of error (E) = 3.5% = 0.035 and confidence level = 95% = 0.95 Then,  We…

Q: What is the relationship between α and the confidence level of a hypothesis test?

A: In hypothesis testing, α is the level of significance, which provides details about the chance of…

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

A: Given: Number of adults = 1000 Percentage of people who chose chocolate = 13% Margin of error =…

Q: The confidence interval was (77, 83) What was the point estimate? What was the margin of error?

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: Here, there is no information about the population parameter. Hence, use the conservative estimate…

Q: To determine the proportion of Americans who support affirmative action policies for minorities and…

A: The objective is to define the sample size for estimating the true proportion of Americans, who…

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

A: Given that, X = 118 N = 200 99% confidence level

Q: A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative…

A: From the given information, she wants to use a 2003 estimate of 55% obtained from a Gallup Youth…

Q: in a sample of 855 bartenders, 48.0% report hearing complaints from patrons about their jobs. If the…

A: From the given information, the sample size (n) is 855. The sample proportion (p) is 48% that is p =…

Q: Suppose we would like to estimate the proportion of all NBA fans who thought Aaron Gordon won the…

A:

Q: A university planner wants to determine the proportion of undergraduate students who plan to attend…

A:

Q: A public opinion pollster wants to estimate the percentage of voters who favor an upcoming proposal.…

A:

Q: The confidence interval was (64, 76) What was the point estimate? What was the margin of error?

A:

Q: A survey of 100 students showed that 20 % of them planned to major in business. What is a 95 %…

A:

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

A: Here, there is no information about the population parameter. Hence, use the conservative estimate…

Q: A transportation planner wishes to estimate the proportion of commuters who drive to work within…

A: There is no specific information about the value of p. Hence, we can consider p as 0.5. A…

Q: In a taste comparison test, it was found that 56 of the 100 persons in a sample preferred the chunky…

A:

Q: A poll asked the question, "What do you think is the most important problem facing this country…

A: Given information- Point estimate, p = 0.25 Margin of error  = 0.04 Confidence level, c = 0.95 We…

Q: A transportation planner wishes to estimate the proportion of commuters who drive to work within…

A: The provided information are: Margin of error (E) = 0.05 Confidence level = 90%

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A: (a) From the Standard Normal Table, the z value for 99% level is 2.576. The sample proportion is,…

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

A: Given that, Margin of error = 3% = 0.03 99% confidence level

Q: Suppose we estimated that 68 percent of Santa Fe students believe that black coffee is disgusting.…

A:

Q: In 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the…

A:

Q: A magazine provided results from a poll of 1500 adults who were asked to identify their favorite…

A:

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

A: As there is no any estimates available, the sample proportion is assumed to be 0.50, that is,…

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.