Does the observed average score differ significantly

Reference no: EM131808655

Question: Here are the satisfaction scores given by 12 randomly selected customers:

89, 98, 96, 65, 99, 81, 76, 51, 82, 90, 96, 76

Does the observed average score differ significantly from the target score of 80? Justify your answer.

Reference no: EM131808655

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