1. In a study of the life expectancy of 500people in a certain geographic region, themean age at death was 72 years oand thestandard deviation was 5.3 years. If asample of 50 people from this region isselected, find the probability that themean life expectancy will be less than 70years

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Answered: 1. In a study of the life expectancy of…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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1. In a study of the life expectancy of 500 people in a certain geographic region, the mean age at death was 72 years and the standard deviation was 5.3 years. If a sample of 50 people from this region is selected, find the probability that the mean life expectancy will be less than 70 years