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A sample of final exam scores is normally distributed with a mean of 20 (standard deviation 5). If 30 students took the exam, how many

A sample of final exam scores is normally distributed with a mean of 20 (standard deviation 5). If 30 students took the exam, how many of them would have scored:

1. Lower than 10?2. Lower than 22?3. Higher than 26?4. Higher than 18?5. Between 15 and 25?6. Between 17 and 24?

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