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The deciles of any distribution at the points tht mark off the lowest 10% and the highest 10%. The deciles of a density curve are therefore the points with are 0.1 and 0.9 to their left under the curve.

a) What are the declies of the standard Normal distribution?

b) The heights of young women are approximately Normal with mean 64.5 inches and standard deviation 2.5 inches. what are the declies of this distribution? show your work.

Answer :

-1.2815516 
20    -0.8416212 
30    -0.5244005 
40    -0.2533471 
50    0.0000000 
60    0.2533471 
70    0.5244005 
80    0.8416212 
90    1.2815516 

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