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zzz [600]
3 years ago
15

The service times for customers coming through a checkout counter in a retail

Mathematics
1 answer:
notka56 [123]3 years ago
8 0

Answer:

38.2  %

Step-by-step explanation:

120/100 = 1.2 (average time)

(1.2 - 1.5)/1 = -.3

z table value for "-.3" is .3821

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