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In a standard normal curve, the area under the density curve that lies between 30 and 40
is 0.832. What percentage of all possible observations of the variable are either less than
30 or greater than 40?

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Deanna L. | Electrical engineering major and music lover with MIT degreeElectrical engineering major and music l...
4.9 4.9 (128 lesson ratings) (128)
Anything less than 30 or greater than 40 is in between 30 and 40 so the probability is 1-.832.