Question: The following stem-and-leaf display reports the number of orders received per day by a mail-order firm.

1. How many days were studied?
2. How many observations are in the fourth class?
3. What are the smallest value and the largest value?
4. List the actual values in the sixth class.
5. How many days did the firm receive less than 140 orders?
6. How many days did the firm receive 200 or more orders?
7. On how many days did the firm receive 180 orders?
8. What is the median value?

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