A nationwide testing service collected scores from a set of examination questions that were used during the last 3 years. The distribution is summarized in the accompanying table. The mean is 600 and the standard derivation is 200. Does the evidence support rejection of the hypothesis that the data come froma normal distribution? Do a 5 % test.

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Score <300 301-400 401-500 501-600 601-700 701-800 801-900 More than 900 Frequency 10 25 40 45 44 35 20 15