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TABLE 2-6
The following are the durations in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier.
-Referring to Table 2-6, if 10 calls lasted 30 minutes or more, how many calls lasted less than 5 minutes?
Window
An opening in the wall of a building, vehicle, or container, typically covered with glass, that allows light and air to enter and people to see out; metaphorically, an opportunity or period of time.
Retina
The light-sensitive layer of tissue at the back of the inner eye, which transmits visual information to the brain via the optic nerve.
Fovea
A tiny pit located in the macula of the retina, providing the clearest vision of fine details when looking directly at an object.
Colour Vision
The ability of the visual system to distinguish objects based on the wavelengths (or frequencies) of the light they reflect or emit.
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