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Accepted characters: numbers, decimal point markers (period or
comma), sign indicators (-), spaces (e.g., as thousands separator, 5
000), "E" or "e" (used in scientific notation). NOTE: For scientific
notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b"
need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid
whereas {9i} is not.
The marketing manager of a large supermarket chain would like to
determine the effect of shelf space (in feet) on the weekly sales of
international food (in hundreds of dollars). A random sample of 12
equal –sized stores is selected, with the following results:
Store
Shelf Space(X)
Weekly Sales(Y)
1
10
2.0
2
10
2.6
3
10
1.8
4
15