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littlej_dvine littlej_dvine
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7 years ago
The scores on a certain test are normally distributed with a mean score of 63 and a standard deviation of 2. What is the probability that a sample of 90 students will have a mean score of at least 63.2108?
 
  A) 0.3413 B) 0.3174 C) 0.1587 D) 0.8413
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DCAV1DCAV1
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