A study was made to estimate the difference in salaries of high school teachers in the private and public schools in BARMM. A random sample of 100 teachers in private schools showed an average Php 15,000 with a standard deviation of Php 2,000. A random sample of 200 teachers in public schools of Php 24,000 with standard deviation of Php 1,200. Find a 98% confidence interval for the difference between the average salaries of teachers in private and public schools of BARMM.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A study was made to estimate the difference in salaries of high school
teachers in the private and public schools in BARMM. A random sample of
100 teachers in private schools showed an average Php 15.000 with a
standard deviation of Php 2,000. A random sample of 200 teachers in
public schools of Php 24,000 with standard deviation of Php 1,200. Find a
98% confidence interval for the difference between the average salaries
of teachers in private and public schools of BARMM.
Transcribed Image Text:A study was made to estimate the difference in salaries of high school teachers in the private and public schools in BARMM. A random sample of 100 teachers in private schools showed an average Php 15.000 with a standard deviation of Php 2,000. A random sample of 200 teachers in public schools of Php 24,000 with standard deviation of Php 1,200. Find a 98% confidence interval for the difference between the average salaries of teachers in private and public schools of BARMM.
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