ABSTRACT
Assume that the data on the lengths of the components is normally distributed.
In a batch of 500 components, determine the number of components likely to: (a) have a length of less than 19.95mm (b) be between 19.95mm and 20.15mm (c) be longer than 20.54mm (12)
4. In a factory, cans are packed with an average of 1.0kg of a compound and the masses are normally distributed about the average value. The standard deviation of a sample of the contents of the cans is 12g. Determine the percentage of cans containing (a) less than 985g, (b) more than 1030g, (c) between 985g and 1030g (11)
