You wish to estimate, with 99% confidence, the proportion of all US adults who want more funding for alternative energy. You want the margin of error to be at most 4%. a. Find the minimum sample size needed assuming that there is no preliminary estimate for the population proportion. b. A prior study found that 80% of US adults want more funding for alternative energy. Use this study to find the minimum sample size needed.

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

A: Given,population proportion(p)=0.1margin of error (E)=0.025α=1-0.95=0.05α2=0.025Z0.025=1.96

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: ou 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: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

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

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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 wish to estimate, with 90% confidence, the proportion of tablet owners who use their tablets…

A: Solution: 1. From the given information, confidence level is 0.90 and E=0.02. Since the proportion…

Q: You are running a political campaign and wish to estimate, with 95% confidence, the proportion of…

A: Formula for the sample size needed to estimate a population proportion is

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 researcher wishes to estimate the number of households with two cars. How large a sample is needed…

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Q: Some states now allow online gambling. As a marketing manager for a​ casino, you need to determine…

A: Given Data : Margin of error: ME = 0.02 sample proportion: p̂ = 0.5…

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: As per our guidelines we are supposed to answer only one question per post. Given that, margin of…

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

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Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: a)  Given,            Margin of Error ∈=0.055            Assume P∧=0.5            and…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

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Q: Determine the minimum sample size needed if we want to estimate the population percent of students…

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

A: Obtain the sample size of a preliminary estimate for p is 0.90.   The formula of sample size is,…

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

A: According to the provided information, Proportion is unknown. So, worse case proportion is 50%. p =…

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

A: Given P=24%= 0.24 than q= 1-p =0.76 Confidence =99.9 % Estimate = 5%= 0.05  We have to calculate n

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

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

Q: You want to estimate the percentage of adults who believe that passwords should be replaced with…

A: a. Suppose p is the true proportion of adults who believe that passwords should be replaced with…

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

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Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Given Margin of error=0.05 At 95% CI=1.96

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

A: The calculation for the size of the population can be done using the finite population or infinite…

Q: Suppose you would like to estimate, with 97% confidence, the proportion of computers that need…

A: It is given that the level of confidence is 97% and desired margin of error E is 0.035.The formula…

Q: oward revisions in the health care system. The president wants the estimate to be within 0.02 of the…

A: The  population proportion (p) of people that supports  health care revisions is given as 0.61.  The…

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

A: Given Population proportion, p=0.4 Margin of error, E=1.5100=0.015 confidence level=0.99 level of…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

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

A: We have given that when true population percentage is  p = 90% = 0.90 Significance level (α) = 1 -…

Q: You want to estimate the percentage of adults who believe that passwords should be replaced with…

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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.