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solve quickly data, you determined that students' weekly studying time, in hours, followed the N(20,3) distribution. What proportion (not percentage) of all students would study

solve quickly

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data, you determined that students' weekly studying time, in hours, followed the N(20,3) distribution. What proportion (not percentage) of all students would study between 19 and 21 hours a week? Round your answer to 4 decimal places. (:3. 0.2611 :3 0.3781 0.4719 if} 0.4950

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