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Choose the one alternative that best completes the statement or answers the question.
Classify the following random variable according to whether it is discrete or continuous.
1) The number of bottles of juice sold in a cafeteria during lunch
A) discrete B) continuous
2) The heights of the bookcases in a school library
A) continuous B) discrete
3) The cost of a road atlas
A) discrete B) continuous
4) The pressure of water coming out of a fire hose
A) continuous B) discrete
5) The temperature in degrees Celsius on January 1st in Fargo, North Dakota
A) continuous B) discrete