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The average time a subscriber spends reading The Wall Street Journal is 49 minutes (The Wall Street Journal Subscriber Study). Assume the standard deviation is 16 minutes and that the times are normally distributed. 1) What is the probability a subscriber will spend at least 1 hour reading the journal?
2) What is the probability a subscriber will spend no more than 30 minutes reading the journal?
3) What is the time range for the 10% who spend the most time reading the journal?

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