[Solution Library] Salaries of Ph.D. Students. Full-time PhD students receive an average salary of $12.837 according to the U.S. Department of Education. The
Question: Salaries of Ph.D. Students. Full-time PhD students receive an average salary of $12.837 according to the U.S. Department of Education. The dean of graduate studies at a large state university feels that Ph.D. students in his state earn more than this. He surveys 44 randomly selected students and finds their Average salary is $14,445, and the population standard deviation is $1500. With \(\alpha=0.05\). is the dean correct?
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