A population is normally distributed with mean 19.5 and standard deviation 1.1. (a) Find the intervals representing one, two,

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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A population is normally distributed with mean 19.5 and standard deviation 1.1.

(a) Find the intervals representing one, two, and three standard deviations of the mean.
one standard deviation       (smaller value)
   (larger value)
two standard deviations       (smaller value)
   (larger value)
three standard deviations       (smaller value)
   (larger value)

(b) What percent of the data lies in each of the intervals in part (a)? (Round your answers to two decimal places.)
one standard deviation       %
two standard deviations       %
three standard deviations       %
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