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uppose your statistics instructor gave six examinations during the semester. You received the following grades (percent...

uppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct): 79, 66, 81, 85, 89, and 77. Instead of averaging the six scores, the instructor indicated he would randomly select three grades and compute the final percent correct based on the three percents.
a. How many different samples, without replacement, of three test grades are possible?
  
  Different samples   
c.

Compute the mean of the sample means and compare it to the population mean. (Round your answers to 3 decimal places.)
  
  
  The mean of the sample means is   
  The population mean is   
  Both means are EQUAL ?? OR NOT EQUAL???
Math   Statistics-And-Probability   
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