a. What standard deviation must x¯ have so that 99.7% of all samples give an ?¯ within 0.9 points of ?? Use the 68–95–99.7 rule. b. How large an SRS do you need in order to reduce the standard deviation of x¯ to the value you found?   -standard deviation about 6.5 You want your sample mean x¯ to estimate ? with an error of no more than 0.9 points in either direction.

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A: a) Assume that μ is the population mean age of coyotes.

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A: Solution-: Given: μ=130,σ=16,n=30 Let, X= be the random variable ∴X→ N(μ=130,σ2=162)

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Q: Q2: b) For a mean of 70 and a standard deviation of 8, find standardized score for a value of 80.…

A: Givenmean(μ)=70standard deviation(σ)=8x=80

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A:

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A:

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A:

Q: We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers…

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Q: he accompanying​ table, which describes the number of adults in groups of five who reported…

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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.