A researcher wishes to estimate the percentage of adults who support abolishing the penny . What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 95 % confidence if ( a he uses a previous estimate of 24% ? (b ) he does not use any prior estimates ?

A researcher wishes to estimate the percentage of adults who support abolishing the penny . What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 95 % confidence if ( a he uses a previous estimate of 24% ? (b ) he does not use any prior estimates ?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: Choose the correct answer below. O A. The statement indicates that the study is only 4% confident…

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

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

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

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Margin of Error(E)=0.05For 99% confidence level Zα2=2.576 Formula; E=Zα2×(p×(1-p)n)

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given that : p = 0.23 Confidence level : 99% Margin of error : 2.5 % We have to find the sample…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given, Margin error = 0.015 Population proportion = 0.21 The objective is to find the sample…

Q: If we want to be within 0.02 of the true proportion of homes that have a direct television receiver…

A: The population proportion is 82%, the confidence level is 98% and estimate is within 0.02.…

Q: ninimum sample size n n

A: Given : Margin of error=E=3%=0.03 Significance level=α=0.10 Estimate of the proportion =p-hat=0.25…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given information: Population proportion p=0.9 Confidence level = 97% Margin of error = 4%

Q: 7. Create a confidence interval for o using the following information: Ages of people driving in the…

Q: As we may all know, adults use credit cards for all sorts of reasons. A survey found that 66% of…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.Here,

Q: how large of a sample would be required for the commissioner to make the desired estimate?

A: The state education commission wants to estimate the proportion of tenth-grade students in the state…

Q: nt to obtain a sample to estimate a population proportion. Based on previous evidence, you believe…

A: At a 97% confidence level, the z value is 2.17 which can be obtained by using the standard normal…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Solution

Q: a researcher wants to estimate a population proportion with a margin of error of 0.05. What is the…

A: Given that the margin of error is 0.05. Given confidence level is 95% Significance level is 5% From…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 90%

Q: researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: We have given that Population proportion =26%=0.26 Margin of error =E =0.03 90% confidence…

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

Q: How many people must be surveyed if we want to estimate the percentage of students weigh more than…

A: Given: The margin of error = 3%=0.03 Confidence level = 98% Since the proportion is students is not…

Q: A research intern would like to estimate, with 95% confidence, the true proportion of employees who…

A: Answer: From the given data, Confidence level = 95% Margin of error (E) = 5% = 0.05

Q: Suppose a certain Statistics instructor wants to estimate the proportion of students that cheat on…

A: From the provided information,Confidence level = 95%Margin of error (E) = 0.02When no prior estimate…

Q: In spite of the potential safety hazards, some people would like to have an internet connection in…

A: From the provided information, Proportion (p̂) = 0.20

Q: By means of a pilot survey, it is already known that the proportion of residents in opposition to…

A: Formula for sample size is,

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: a) Given, Margin error = 0.02 Population proportion = 0.36 The objective is to find the sample…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: GivenMargin of error(E)=0.03confidence level(c)=99%α=1-0.99=0.01α2=0.05zα2=z0.05=1.6449 (from…

Q: (c) Suppose that the researchers wanted to estimate the proportion of patients under 50 years old…

A: Givenx=19n=356Margin of error(E)=0.03p^=xn=19356=0.0534Confidence interval = 95%

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

Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…

A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: sample size n=?

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given that p = 0.38 , Margin of error = E = 2.5% = 0.025 95% confidence level

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

Q: A researcher wishes to estimate the proportion of adults who have high-speed internet access. What…

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A: p = 0.5 Margin of error = 0.01

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Find z-critical value:…

Q: Suppose a certain Statistics instructor wants to estimate the proportion of students who enjoy…

A: since estimate for proportion is not known therefor we take p⏞=0.5 margin of error=E= 0.03 level of…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Given that, Margin of error E=0.03 Confidence level is 90% Critical value: The two tailed z critical…

Q: An economist wants to know if the proportion of the U.S. population who commutes to work via…

A: The objective is to find the sample size required if an economist wants an estimate of the…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Solution: From the given information, confidence level is 0.99, p=0.25 and E=0.03.

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

Concept explainers

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.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.

Similar questions

A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 90% confidence if (a) he uses a previous estimate of 34%?(b) he does not use any prior estimates?
If you want to be 99% confident of estimating the population proportion to within a sampling error of 0.06 and there is historical evidence that the population proportion is approximately 0.43, what sample size is needed.
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 3 percentage points with 90% confidence if (a) he uses a previous estimate of 36%? (b) he does not use any prior estimates? (a) n= (Round up to the nearest integer.) (b) n= (Round up to the nearest integer.)
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within .06 with 95% confidence if (a) she uses a previous estimate of 0.33?
Your state is considering raising the legal age for consumption of alcohol beverages. How large a sample size much be taken to make an estimate of the true portion of citizens who favor this move? The error should be no moe than 0.01 with 99% confidence.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.36. You would like to be 95% confident that your esimate is within 2.5% of the true population proportion. How large of a sample size is required?
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 99% confidence if (a) she uses a previous estimate of 0.46? n=what (b) she does not use any prior estimates? n=what
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within4 percentage points with 95% confidence if (a) he uses a previous estimate of 34%? (b) he does not use any prior estimates?
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 99% confidence if (a) he uses a previous estimate of 24%? (b) he does not use any prior estimates?
Why is it that the answer to this question is E? What is the reason behind it? Thanks!
A researcher wishes to estimate the percentage of adults who support abolishing the penny What size sample should be obtained if he wishes the estimate to be within 3 percentage points with 95% confidence if (a) he uses a previous estimate of 24% ? (b) he does not use any prior estimates ?
If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.05 and there is historical evidence that the population proportion is approximately 0.45, what sample size is needed?