Question
The size of stones used in a 'Concrete blend' are Normally Distributed, with a Mean diameter of 19.5mm and a Standard Deviation of 1.8mm. What
The size of stones used in a 'Concrete blend' are Normally Distributed, with a Mean diameter of 19.5mm and a Standard Deviation of 1.8mm.
What is the probability that a stone taken at random will have a diameter greater than 18mm?
The smallest 15.15% of the stones are to be removed by passing them over a sieve. What size should the holes in the `sieve' be? ( ie: Below what size will the stones be rejected?)
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Algebra And Trigonometry (Subscription)
Authors: Michael Sullivan
9th Edition
0321830741, 9780321830746
