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Solved: Check to see whether the correction factor should
Chapter 6, Problem 26EC(choose chapter or problem)
For Exercises 26 and 27, check to see whether the correction factor should be used. If so, be sure to include it in the calculations.
Life Expectancies In a study of the life expectancy of 500 people in a certain geographic region, the mean age at death was 72.0 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.
Questions & Answers
QUESTION:
For Exercises 26 and 27, check to see whether the correction factor should be used. If so, be sure to include it in the calculations.
Life Expectancies In a study of the life expectancy of 500 people in a certain geographic region, the mean age at death was 72.0 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.
ANSWER:Solution:
Step 1 of 2:
From the given problem we have
The mean
The standard deviation
The sample size n = 50
The population size N = 500.
Here we have to find the probability that the mean life expectancy will be less than 70 years.