You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 13%. You would like to be 98% confident that your estimate is within 4.5% of the true population proportion. How large of a sample size is required?

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

A: The confidence level is 95% Therefore, α = 0.05 and α/2=0.025. The margin of error is 0.045 Since…

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

A: Given that  Population proportion p=0.6 Margin of error =E =0.03 90% confidence.

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 dataError = 2.5% = 0.025Confidence level = 0.98

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: Given Confidence interval=90% sample proportion is within 5 percentage

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

A: Introduction: The confidence interval for the 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…

A: According to previous evidence, the population proportion (p) is 36%, that is, 0.36.Here, the margin…

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

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

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Q: A sample selected from a population gave a sample proportion equal to 0.60.

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Q: The province of Pangasinan has a population of 3,163,190. Calculate the sample size using Yamane's…

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

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

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

A: Solution

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

A: It has been provided that Population proportion (p) = 0.4 Margin of error (E) = 5% = 0.05 Confidence…

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

A: Obtain the critical value at 95% confidence level:It is given that the proportion value is 0.33 and…

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

A: Find z-critical value:…

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

A: Given data, p=30%=0.30 E=0.1%=0.001 z value at 99.5% confidence is Zc=2.807 n=?

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

A: It is given that margin of error (E) is 0.045 and the confidence level is 0.90.

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

A: Step-by-step procedure to obtain the value of z using MINITAB:Choose Graph > Probability…

Q: A researcher wishes to estimate the proportion of corporate executives whose annual salary is over…

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

A: Givenpopulation proportion(p)=0.74Margin of error(E)=0.05confidnence interval…

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

A: For a 99% confidence interval, the corresponding critical value is calculated using excel:

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

A: From the provided information, Population proportion (p) = 0.27 Margin of error (E) = 3.5% or 0.035…

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: a nutritionist wishes to determine, within 3% the true proportion of adults who do not eat lunch. if…

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

A: It is given that the population proportion  is 0.32. It is known that the critical value for 95%…

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

A: Solution: From the given information, confidence level is 0.97, p=0.62 and E=0.04.

Q: A sample of size 26 was gathered from high school seniors to estimate how many intended to attend…

A: Given that  Sample size (n) = 26 The proportion answering Yes (P) = 0.9 P = 0.9 ; Q=1-P = 1-0.9 =0.1…

Q: How many people do we need to sample? We would like to be within 3 percent of the actual answer and…

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Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, above what…

A: Solution:From the given information, the proportion of African American is 0.13, random sample of…

Q: A state legislator wishes to survey residents of her district to see what proportion of the…

A: Answer:-  Given, Margin of error=7%=0.07 Confidence level=0.90 Let P=0.5 ( as we don't have sample…

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

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

A: Find z-critical value:…

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

A: Step-by-step procedure to obtain the value of z using MINITAB:Choose Graph > Probability…

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

A: From the provided information, Population proportion (p) = 0.86 Confidence level = 99% Margin of…

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

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Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, below what…

A: From the given data The US population is 13% African American

Q: Sleep Aids. The additional sleep, to the nearest tenth of an hour, obtained by a sample of 100…

A: Quantitative variable: A variable that provides numerical values of individual and Arithmetic…

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

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Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

Q: You would like to be 99.9 confident that your estimate is within 2% of the true population…

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

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

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

A: p=0.22, q=0.7, α=1-0.95=0.05, Margin of errorE=Zα/2.pqn=0.04

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

A: It is given that margin of error (E) is 0.045, the population proportion is 0.19 and the confidence…

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

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

A: From the given information, Margin error (E) = 0.015 Population proportion = 0.39   The objective is…

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

A: The Population proportion is 90%; p=0.90 Margin of error is 2%; E=0.02 α=0.05

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

A: The confidence level is 90% Therefore, α = 0.10 and α/2=0.05. The margin of error is 0.02 The…

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

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