Monthly Salaries For Faculty Working At Four Year Institutions Are Approximately

Monthly salaries for faculty working at four-year institutions are approximately normally distributed with a mean of $7019 and a standard deviation of $2519. Suppose I take a random sample of 25 of these institutions. What is the probability of observing a sample mean of $6000 or less?

a. 0.343 b. 0.102 c. 0.022 d. 0.504

 

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