A laminated item is composed of five layers, say X1, X2, X3, X4, and X5. The layers are a simple random sample from a population whose thickness has mean 1,32 mm and standard deviation 0,04 mm. Find the standard deviation of the thickness of an item. Round the answer to four decimal places.

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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.