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July 26, 2014

Homework Help: statistics

Posted by sophia on Thursday, October 25, 2007 at 8:11pm.

Given a distribution with mean X and standard deviation S, answer the following.

4.1 Determine the mean and standard deviation if constant K is added to each observation
4.2 Determine the mean and standard deviation if constant K is multiplied by each observation
4.3 Assuming no knowledge about the distribution, estimate the percentage of observations that lie within two (2) standard deviations of the mean; explain your approach
4.4 Assuming the distribution is normally distributed, estimate the percentage of observations that lie within two (2) standard deviations of the mean; explain your approach

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