1. Are customers more loyal in the East or in the West? The following table is based on information from Trends in the United States, published by the Food Marketing Institute, Washington, D. C. The columns represent length of customer loyalty (years) at a primary supermarket. The rows represent regions of the United States. LESS 1-2 YEARS 3-4 YEARS 5-9 YEARS 10-14 15 + ROW THAN 1 YEARS YEARS ТОTAL YEAR EAST 32 54 59 112 77 118 452 MIDWEST 31 68 68 120 63 173 523 SOUTH 53 92 93 158 106 158 660 WEST 41 56 67 78 45 86 373 COLUMN 157 270 287 468 291 535 2008 ТОTAL What is the probability that a customer chosen at random a. has been loyal 10 – 14 years? b. has been loyal 10 - 14 years, given that he or she is from the East? c. has been loyal at least 10 years?

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