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SAT, 08.10.2021 21:10 ovebrown

a group of 625 students has a mean age of 15.8 years with a standard deviation of 1.2 years. the ages are normally distributed. about how many students in this sample are younger than 17?

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a group of 625 students has a mean age of 15.8 years with a standard deviation of 1.2 years. the age...
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