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: 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…

A:

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) %…

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A: Given,margin of error(E)=0.041α=1-0.95=0.05α2=0.025Z0.025=1.96

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

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A: We have to find sample proportion.

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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…

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

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A:

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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 of error E= 0.01 Population proportion p= 0.33 Confidence level…

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

A: From the provided information, Margin of error (E) = 0.03 Confidence level = 95%

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A: The confidence level is 90%, the sample percentage is within 4.5 percentage points of the true…

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: It is given that margin of error (E) is 0.02 and the confidence level is 0.90.

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A:

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

A: We have given that,  Population proportion (p) = 58% = 0.58, margin of error (E) = 4% = 0.04 and…

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A:

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 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…

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A: Find z-critical value:…

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

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A: Critical value: Here, α = 0.01. Using excel formula “=NORM.S.INV(1-(0.01/2))”, the critical value is…

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

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

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A: (a) Given that , The confidence level is, C = 95% = 95/100= 0.95 The level of significance is, α =…

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A:

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

A: From the provided information, Margin of error (E) = 1% or 0.01 Confidence level = 90%

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A:

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A:

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A: Given Confidence is 95% Error is 0.1

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.