Zuellig Philippines is concerned that the quality of graduates they interview for permanent jobs may be decreasing. Last year, the average grade point average (GPA) over all applicants interviewed was 3.32. This year, the first 145 applicants interviewed had an average GPA of 3.25. If these 145 students are considered at random sample, is the company’s concern justified? Assume that the population standard deviation is 1.19.

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