A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these social outreach programs should be located based on the percentage of residents living below the poverty line in each region of the city. He takes a simple random sample of 129 people living in Gastown and finds that 25 have an annual income that is below the poverty line.   Suppose that the government official wants to re-estimate the population proportion and wishes for his 95% confidence interval to have a margin of error no larger than 0.05. How large a sample should he take to achieve this? Please carry answers to at least six decimal places in intermediate steps.   Sample size = Answer

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Q: In studying his campaign plans, Mr. Singleton wishes to estimate the difference between younger…

A: sample size(n1)=769x1=497sample size(n2)=703x2=390confidence level=90%

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A: Given: Margin of error, E=0.04 Confidence level=80%

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Q: Refer to the following scenario. Ah epidemiologist is worned about the prevalence of the flu in…

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Q: In a certain school, 30% of the student body is taking a biology class. Of the biology students, 35%…

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Q: Part a and b

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A: M1=$3900M2=$3300n1=400n2=450σ1=$880σ2=$810

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A:

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.