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Mathematics, 01.11.2019 02:31 azireyathurmond1
Abank has historically found that the average monthly charges in recent years on its credit card were $1,350. with an improving economy, they suspect that this has increased. a sample of 42 customers resulted in an average monthly charge of $1,376.54 with a standard deviation of $183.89. a. formulate hypotheses that can be used to determine whether the average monthly charge has increased. group of answer choices
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