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Tilastollinen tietojenk¨asittely Exercise 6 05.12.2006 1. Test the hypothesis H

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Tilastollinen tietojenk¨asittely Exercise 6

05.12.2006

1. Test the hypothesisH0:µ= 0 (Hα:µ >0) by using randomization test when the sample is

0.13,−0.01,−0.01,0.42,−0.02,0.01,0.09,0.03,0.04,0.06,0.12,0.03.

2. Using testing based on the normal distribution make a function, which calculates the sample size needed whene=|x¯−µ|,σandαare given.

3-4. Inwtlossdata (Library MASS) find the appropriate degree of polynomial by using cross-validation whenWeightis the dependent variable andDays is the explanatory variable.

5-7. The datapuut(in the R-workspace of the same name) in course directory contain locations (x, y) of trees of a certain measured stand. Investigate if the measured trees are uniformly distributed around the measured area.

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