Posted by **Anonymous** on Wednesday, February 29, 2012 at 4:51pm.

Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct): 89, 64, 88, 89, 91, and 75. Instead of averaging the six scores, the instructor indicated he would randomly select five grades and compute the final percent correct based on the five percents.

(a) How many different samples, without replacement, of five test grades are possible?

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