a) A company has 200 employees working in its two branches. It pays an average salary of $5442 to its employees. If arithmetic means of the monthly salaries paid by the two branches are $4570 and $6750 respectively. Find the number of employees attached each branch. b) In a university of 100 men and 50 ladies the professor noted the number of days absent from class during the period of the four years of the course. For the men, the average number of absences was 15 with a standard deviation of 7, and for the ladies the average number of absences was 10 with a standard deviation of 6. What are the mean and the standard deviation of the absences for the entire class of students? 2.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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a) A company has 200 employees working in its two branches. It pays an average salary of
$5442 to its employees. If arithmetic means of the monthly salaries paid by the two
branches are $4570 and $6750 respectively. Find the number of employees attached each
branch.
b) In a university of 100 men and 50 ladies the professor noted the number of days absent
from class during the period of the four years of the course. For the men, the average
number of absences was 15 with a standard deviation of 7, and for the ladies the average
number of absences was 10 with a standard deviation of 6. What are the mean and the
standard de viation of the absences for the entire class of students?
Transcribed Image Text:a) A company has 200 employees working in its two branches. It pays an average salary of $5442 to its employees. If arithmetic means of the monthly salaries paid by the two branches are $4570 and $6750 respectively. Find the number of employees attached each branch. b) In a university of 100 men and 50 ladies the professor noted the number of days absent from class during the period of the four years of the course. For the men, the average number of absences was 15 with a standard deviation of 7, and for the ladies the average number of absences was 10 with a standard deviation of 6. What are the mean and the standard de viation of the absences for the entire class of students?
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