The lengths of certain items follow a normal distribution with mean 46.94cm and variance 26.3169cm. It is known that 97.61% of the items have a length less than x cm. Find x.
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Normal Distribution Help Needed! watch
- Thread Starter
- 01-12-2011 20:23
- 01-12-2011 21:42
Look up 0.9761 on a z-score table and see how many s.d.s that is, then add that many to 46.94?
There is a flaw in your question though as the units of variance cannot be cm, they must be cm^2.Last edited by Forum User; 01-12-2011 at 21:44.