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the average score in the final examination in college algebra at zcspc is known to be 80 with a standard deviation of 10. a random
the average score in the final examination in college algebra at zcspc is known to be 80 with a standard deviation of 10. a random sample of 39 students was taken from this years batch and it was found they have mean score of 84. test at a=0.05. is this an indication that this years batch performed better in college algebra than the previous batches?
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