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.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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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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