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The scores on a statistic test are normally distributed with a mean of 50 and a standard deviation of 15. A sample of 25 students

The scores on a statistic test are normally distributed with a mean of 50 and a standard deviation of 15. A sample of 25 students selected from the student populationproduced a mean score of 55. If a student is selected ar random, the probability he/she will obtain a score of 55 or more is

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