# Elementary Statistics

1. Use a P- value to test the claim about the population mean Î¼ using the given sample statistics. State your decision for Î± = 0.05

Claim: Î¼ â‰ 230; Sample statistics: x (bar) = 216.5, s = 17.3, n = 48

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2. If X =5.2, R =.3,and n=4, and if specifications are (4.6, 5.8), is the process capable? Show work.

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3. If X = 2.0144, R = .0972,and 25 subgroups of size 5,(show all work)

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a. Find the UCL and the LCL for the X Chart.

b. Find the UCL and the LCL for the R-Char

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#### Solution Preview

1. Use a P- value to test the claim about the population mean Î¼ using the given sample statistics. State your decision for Î± = 0.05

Claim: Î¼ â‰ 230; Sample statistics: x (bar) = 216.5, s = 17.3, n = 48

Data: n Î¼ s x-bar

48 230 17.3 216.5

(1) Formulate ...

#### Solution Summary

The expert examines elementary statistics. A complete, neat and step-by-step solution is provided in the attached Excel file.