A union of restaurant and foodservice workers would like to estimate the mean hourly wage,u, of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate ,u, using the mean of the sample. What is the minimum sample size needed in order for the union to be 95% confident that its estimate is within $0.45 of,u,? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about $2.15. Carry your intermediate computations to at least three decimal places. Write your answer as a whole numbe

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A:

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A: Given data, μ=42500σ=3200P(X>x)=0.881-P(Z<z)=0.88P(Z<z)=0.12P(Z<-1.175)=0.12z=-1.175

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A:

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Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

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A:

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A:

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A: Note:Hey, since there multiple questions  posted, we will answer first question for you. If you want…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: Note: Please repost 2nd question as i can answer only 1 question as per my policy.

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: From the given information  Standard deviation, σ =800 Confidence level , C = 99% = 0.99 Margin of…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

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A:

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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.