18. At a certain university, 22% of students fail general chemistry on their first attempt. Professor Brown teaches at this university and believes that the rate of first-time failure in his general...

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Extracted text: 18. At a certain university, 22% of students fail general chemistry on their first attempt. Professor Brown teaches at this university and believes that the rate of first-time failure in his general chemistry classes is 16%. He samples 75 students from last semester who were first-time enrollees in general chemistry and finds that 16 of them failed his course. Using 0.05, can you conclude that the percentage of failures differs from 16%? A. Yes B. No.