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When its ovens are working properly the time required to bake fruit pies at Elardo Bakeries is normally distributed with a mean of 45 minutes and a standard deviation of 5 minutes

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When its ovens are working properly the time required to bake fruit pies at Elardo Bakeries is normally distributed with a mean of 45 minutes and a standard deviation of 5 minutes. Yesterday a random sample of 16 pies had an average baking time of 50 minutes. 

A) If elardo's ovens are working correctly, how likely is it that a sample of 16 pies would have an average of 50 minutes or more?