Question

One group of individuals watches Commercial A. A different group of individuals watches Commercial B. After viewing the commercial, each group rates its intent to purchase the advertised product using a five-point scale where "5" is the best response. The average for Commercial A is 3.2 while the average for Commercial B is 4.4. Because there is more than a one-point difference between the two averages, no further statistical analyses are required to verify that the difference is not due to chance.

Answer

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