The average annual salary of public school teachers who graduated from a certain college is to be studied. A random sample of 100 teachers has a mean salary of Php 31,578, with a standard deviation of Php 4,415.
Construct a 90 percent confidence interval for the average salary of the population of public school teachers who graduated from this specific college
90% confidence interval: _____ pesos to _____ pesos
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You have not done this concentrated on the first day and you have a very short time to do with your own life
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