The average annual salary for government employees in Manila is Php 125,000. Assume that the population standard deviation is o = Php 15,000. Suppose that a random sample of 55 government employees wi be selected from the population. b. Using the answer from (a) What is the probability that the sample mean will be more than Php 125,000? c. Using the answer from (b) What is the probability the sample mean will be within Php5000 of the population mean?

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.