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Parking meters in a beach resort town cost for minutes. A normal distribution with a mean of and a standard deviation of can be used to model the amount of money one parking meter makes on a busy summer day. 10-152 HW eTool (Desmos).

  1. Make a graph of the distribution of the money made by one meter on your calculator, and sketch it. An appropriate value for the maximum of the relative frequency axis is Ymax .

  2. From your graph, visually estimate where the middle of meter earnings fall. Shade this portion of your sketch.

  3. Use your calculator to check your estimate. How close to did you come?

    normalcdf(lower estimate, upper estimate, )

    Use the eTool below to help solve parts (a - c).
    Click the link at right for the full eTool version: CCA2 10-152 HW eTool