CAIE S2 2012 November — Question 1

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2012
SessionNovember
TopicLinear combinations of normal random variables
TypeSum or total of normal variables
1 The lengths of logs are normally distributed with mean 3.5 m and standard deviation 0.12 m . Describe fully the distribution of the total length of 8 randomly chosen logs.
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