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Mathematics 7 Online
OpenStudy (anonymous):

(will medal and fan!!!) At the weekly emptying of a container with refuse collection a haulage contractor has in a long time registered the weight with the following results: a mean of 2520 kg and a standard deviation of 434 kg. Assume that the amount (X), that is daily put into the container, is a normal distribution, and that the amount put into the container can be described by: S=X_1+X_2+X_3+X_4+X_5+X_6+X_7 Q. 1) What is the expected daily volume of refuse collection and what is the standard deviation?

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