Statistics

[Paul Suszko]

The lengths of a certain bushing are normally distributed with mean(bar) X. How many standard deviation units synnetrical about(bar) X, will include 80% of the lengths?

 

[tkhunny]

Do you have a table or calculator? This is the simplest of all lookup problems. If you cannot do it, you are struggling more than that with which we can help you here. Please go have a chat with your instructor.