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 19.95 mm (b) be between 19.95 mm and 20.15 mm (c) be longer than 20.54 mm (12)
4. In a factory, cans are packed with an average of 1.0 kg 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 12 g. Determine the percentage of cans containing (a) less than 985 g, (b) more than 1030 g, (c) between 985 g and 1030 g (11)
For lecturers/instructors/teachers, fully worked solutions to each of the problems in Revision Test 11, together with a full marking scheme, are available at the website:
