Mathematics, 27.07.2021 23:20, keilyjaramillo2870

According to the the U. S. Department of Education, full-time graduate students receive an average salary of $15,000 with a standard deviation of $1,200. The dean of graduate studies at a large state university in PA claims that his graduate students earn more than this. He surveys 100 randomly selected students and finds their average salary is $16,000. Use a significance level of 0.05 to test if there is evidence that the dean's claim is correct. What is the z subscript c r I t end subscript?

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According to the the U. S. Department of Education, full-time graduate students receive an average s...