Hypothesis Test - Population Mean - Sigma Known The mean annual starting salaries for college graduates with a degree in Operations Management was $65,000. We would like to determine whether or not this has decreased this year due to the pandemic. Data were collected over the annual starting salaries from a random sample of 40 Operations Management graduates. The average salary is $63,500 in the sample. Assume the standard deviation for the population of annual salaries is $3500. Let denote the average annual starting salaries among all Operations Management graduates this year. The appropriate hypotheses to test are:     What is the value of the appropriate test statistic?

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