According the U.S. Department of Education, full-time graduate students receive an average salary of $12,800. The dean of graduate studies at a large state university in PA claims that graduate students earn a different amount than this. He surveys 46 randomly selected students and finds their average salary is $13,445. The U.S. Department of Education knows the population standard deviation is $1800. With alpha = 0.05, is the dean’s claim correct? (Hint: Do everything- State, Plan, Do, Conclude

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